Guidelines for Mental Math 3 to 5 times per week 10 questions each test 5 seconds to answer each question Test is self corrected, results recorded name goes in for a draw (1, 2, 3 chances) If corrected incorrectly no chance to win during the next draw. If no red pen, no tickets for that day Strategies used will be discussed

Mental Math # 1 1) = 2) = 3) = 4) = 5)5 x x x x 1 = 6)4 x x x 1000 = 7) = 8) = 9) = 10) =

Mental Math # 1 1) = ) = ) = ) = )5 x x x x 1 = )4 x x x 1000 = ) = ) = 840 9) = ) = 7520

Mental Math # 2 1) = 2) ) = 4) = 5)3 x x x x x 1 = 6)4 x x x 100 = 7) = 8) = 9) = 10) =

Mental Math # 2 1) = ) = ) = ) = )3 x x x x x 1 = )4 x x x 100 = ) = 525 8) = ) = ) = 4760

Mental Math # 3 1) = 2) = 3) = 4) = 5)3 x x x x 1 = 6)4 x x x 100 = 7) = 8) = 9) = 10) =

Mental Math # 3 1) = ) = ) = ) = )3 x x x x 1 = )4 x x x 100 = ) = 205 8) = ) = ) = 6070

Mental Math # 4 1) = 2) = 3) = 4) = 5)5 x x x x 1 = 6)7 x x x 100 = 7) = 8) = 9) = 10) =

Mental Math # 4 1) = ) = ) = ) = )5 x x x x 1 = )7 x x x 100 = ) = 205 8) = ) = ) = 4076

Mental Math # 5 1) = 2) = 3) = 4) = 5)6 x x x x 1 = 6)9 x x x x 10 = 7)9 + 7 = 8) = 9) = 10) =

Mental Math # 5 1) = ) = 250 3) = ) = 330 5)6 x x x x 1 = )9 x x x x 10 = )9 + 7 = 16 8) = 160 9) = ) = 460

Mental Math # 6 1) = 2) = 3) = 4) = 5)8 x x x x 1 = 6)9 x x x 1000 = 7)7 + 5 = 8) = 9) = 10) =

Mental Math # 6 1) = ) = 200 3) = ) = )8 x x x x 1 = )9 x x x 1000 = )7 + 5 = 12 8) = 120 9) = ) = 367

Mental Math # 7 1) = 2) = 3) = 4) = 5) = 6) = 7) = 8) = 9) = 10) =

Mental Math # 7 1) = 69 2) = 87 3) = 86 4) = 576 5) = 778 6) = 939 7) = 631 8) = 498 9) = ) = 925

Mental Math # 8 1) = 2) = 3) = 4) = 5) = 6) = 7) = 8) = 9) = 10) =

Mental Math # 8 1) = 483 2) = 597 3) = 569 4) = 896 5) = 879 6) = 950 7) = 665 8) = 576 9) = ) = 839

Mental Math # 9 1) = 2) = 3) = 4) = 5) = 6) = 7) = 8) = 9) = 10) =

Mental Math # 9 1) = 997 2) = 349 3) = 549 4) = 997 5) = 988 6) = 382 7) = 631 8) = 848 9) = ) = 830

Mental Math # 10 1) = 2) = 3) = 4) = 5) = 6) = 7) = 8) = 9) = 10) =

Mental Math # 10 1) = 796 2) = ) = 459 4) = 778 5) = 367 6) = 987 7) = 900 8) = 800 9) = ) = 333

Mental Math # 11 1)Five and three tenths = 2)Thirty two and four hundredths = 3)Seventy-seven thousandths = 4)Two hundred four and five hundredths = 5)Nine hundredths = 6) = 7) = 8) = 9) (5 x 1) + (2 x 0.1) + (4 x 0.01) = 10) 3 x x 0.01 =

Mental Math # 11 1)Five and three tenths = 5.3 2)Thirty two and four hundredths = )Seventy-seven thousandths = )Two hundred four and five hundredths = )Nine hundredths = ) = 4.2 7) = ) = ) (5 x 1) + (2 x 0.1) + (4 x 0.01) = ) 3 x x 0.01 =

Mental Math # 12 1)Nine and three hundredths = 2)Thirty two and four tenths = 3)Seven thousandths = 4)Three hundred and fifteen thousandths = 5)Nine hundredths = 6) = 7) = 8) = 9) (5 x 0.001) + (2 x 0.01) + (4 x 0.1) = 10) 3 x x x 1 =

Mental Math # 12 1)Nine and three hundredths = )Thirty two and four tenths = )Seven thousandths = )Three hundred and fifteen thousandths = )Nine hundredths = ) = ) = ) = ) (5 x 0.001) + (2 x 0.01) + (4 x 0.1) = ) 3 x x x 1 = 304.6

Mental Math # 13 1)

2)

3)

4)

5)

6)

7)

8)

9)

10)

Mental Math # 13 1) One and four tenths or 1.4

2) Fifty-three hundredths or 0.53

3) One and three hundredths or 1.03

4) One and Two tenths or 1.2

5) One and thirty-four thousandths or

6) Five thousandths or 0.005

7) One and thirteen thousandths or 1.013

8) Two and one hundred forty-two thousandths or 2.142

9) Twenty-two thousandths or 0.022

10) One and five hundredths or 1.05

Mental Math # 14 1)3.25 or 3.5 2)2.000 or )0.98 or 0.89 = 4)98.9 or )10.01 or = 6)6.6 or )Two hundredths or two thousandths = 8)1.9 or )1 or 0.95 = 10) 636 or 663 =

Mental Math # 14 1)3.25 or 3.5 2)2.000 or )0.98 or )98.9 or )10.01 or )6.6 or )Two hundredths or two thousandths 8)1.9 or )1 or ) 636 or 663

Mental Math # 15 1)3.25 rounded to the nearest tenth = 2)234.9 rounded to the nearest whole number = 3)1.984 rounded to the nearest hundredth = 4)48.9 rounded to the nearest ten = 5)10.08 rounded to the nearest tenth = 6)6.6 rounded to the nearest whole number = 7) rounded to the nearest hundred = 8)7.3 rounded to the nearest whole number = 9) rounded to the nearest thousandths = 10)1.95 rounded to the nearest tenth =

Mental Math # 15 1)3.25 rounded to the nearest tenth = 3.3 2)234.9 rounded to the nearest whole number = 235 3)1.984 rounded to the nearest hundredth = )48.9 rounded to the nearest ten = 50 5)10.08 rounded to the nearest tenth = )6.6 rounded to the nearest whole number = 7 7) rounded to the nearest hundred = )7.3 rounded to the nearest whole number = 7 9) rounded to the nearest thousandths = )1.95 rounded to the nearest tenth = 2

Mental Math # 16 1)10 x 30 = 2)3 x 500 = 3)2.4 x 2 = 4)5 x 80 = 5)100 x 38 = 6)6.2 x 2 = 7)90 x 50 = 8)300 x 20 = 9)10 x 96 = 10) 1.25 x 3 =

Mental Math # 16 1)10 x 30 = 300 2)3 x 500 = )2.4 x 2 = 4.8 4)5 x 80 = 400 5)100 x 38 = )6.2 x 2 = )90 x 50 = )300 x 20 = )10 x 96 = ) 1.25 x 3 = 3.75

Mental Math # 17 1)100 x 93 = 2)30 x 70 = 3)0.9 x 2 = 4)50 x 60 = 5)1 x 3.8 = 6)10 x 3.8 = 7)200 x 50 = 8)30 x 40 = 9)10 x 180 = 10) 1.99 x 2 =

Mental Math # 17 1)100 x 93 = )30 x 70 = )0.9 x 2 = 1.8 4)50 x 60 = )1 x 3.8 = 3.8 6)10 x 3.8 = 38 7)200 x 50 = )30 x 40 = )10 x 180 = ) 1.99 x 2 = 3.98

Mental Math # 18 1)30 x 90 = 2)5 x $9.13 = 3)3 x $7.97 = 4)7 x $2.06 = 5)$5.13 x 6 = 6)5 x $3.89 = 7)10 x 3.8 = 8)300 x 50 = 9)10 x 340 = 10) $1.98 x 2 =

Mental Math # 18 1)30 x 90 = )5 x $9.13 = $45 3)3 x $7.97 = $24 4)7 x $2.06 = $14 or )$5.13 x 6 = $30 6)5 x 3.89 = $20 7)10 x 3.8 = $38 8)300 x 50 = )10 x 340 = ) $1.98 x 2 = $3.96 or $4.00

Mental Math # 19 1)20 x 700 = 2)9 x $4.21 = 3)9 x $0.97 = 4)5 x $3.36 = 5)$5.13 x 6 = 6)5 x 3.09 = 7)1 x 5.9 = 8)10 x 5.9 = 9)100 x 66 = 10) $1.05 x 3 =

Mental Math # 19 1)20 x 700 = )9 x $4.21 = $36 3)9 x $0.97 = $9 4)5 x $3.36 = $15 5)$5.13 x 6 = $30 6)5 x 3.09 = $15 or )1 x 5.9 = 5.9 8)10 x 5.9 = 59 9)100 x 66 = ) $1.05 x 3 = $3.15 or $3.00

Mental Math # 20 1)10 x 7.5 = 2)0.9 x 10 = 3)100 x 0.97 = 4)10 x 3.36 = 5)5.13 x 100 = 6)100 x 30.9 = 7)10 x = 8)1000 x 5.9 = 9)6.6  10 = 10) 1.05 x 10 =

Mental Math # 20 1)10 x 7.5 = 75 2)0.9 x 10 = 9 3)100 x 0.97 = 97 4)10 x 3.36 = )5.13 x 100 = 513 6)100 x 30.9 = )10 x = )1000 x 5.9 = )6.6  10 = ) 1.05 x 10 = 10.5

Mental Math # 21 1)100 x 39.1 = 2)9.3 x 10 = 3)10 x 0.93 = 4)100 x 6.3 = 5)3.4  10 = 6)5.13 x 10 = 7)10 x 30.9 = 8)10 x = 9)1000 x 0.5 = 10)10.5  100 =

Mental Math # 21 1)100 x 39.1 = )9.3 x 10 = 93 3)10 x 0.93 = 9.3 4)100 x 6.3 = 630 5)3.4  10 = )5.13 x 10 = )10 x 30.9 = 309 8)10 x = )1000 x 0.5 = )10.5  100 = 0.105

Mental Math # 22 1)45.1  10 = 2)9.3  10 = 3)67  10 = 4)6.3  100 = 5)3400  100 = 6)51.3  10 = 7)10 x 39.1 = 8)413.1  100 = 9)2.5  1000 = 10)750.5  100 =

Mental Math # 22 1)45.1  10 = )9.3  10 = )67  10 = 6.7 4)6.3  100 = )3400  100 = 34 6)51.3  10 = )10 x 39.1 = 391 8)413.1  100 = )2.5  1000 = )750.5  100 = 7.505

Mental Math # 23 1)83  100 = 2)4.7 x 10 = 3)69.2  10 = 4)16.3  100 = 5)30.4  10 = 6)933  10 = 7)10 x 92.1 = 8)4  1000 = 9)2.5  100 = 10)5.2  10 =

Mental Math # 23 1)83  100 = )4.7 x 10 = 47 3)69.2  10 = )16.3  100 = )30.4  10 = )933  10 = )10 x 92.1 = 921 8)4  1000 = )2.5  100 = )5.2  10 = 0.52

Mental Math # 24 1)7.7  100 = 2)40 x 300 = 3) = 4)6 + 8 = 5) = 6) = 7)3 x x x 1 = 8)46.45 rounded to the nearest tenth = 9)Five hundred and four thousandths = 10)Which is larger 98.9 or =

Mental Math # 24 1)7.7  100 = )40 x 300 = ) = )6 + 8 = 14 5) = 164 6) = 653 7)3 x x x 1 = )46.45 rounded to the nearest tenth = )Five hundred and four thousandths = )Which is larger 98.9 or = 98.9

Mental Math # 25 1)822.4  100 = 2)50 x 30 = 3) = 4)7 + 5 = 5) = 6)2 x $3.99= 7)3 x x x 1000 = 8) rounded to the nearest hundredth = 9)ten and thirteen thousandths = 10) =

Mental Math # 25 1)822.4  100 = )50 x 30 = ) = )7 + 5 = 12 5) = 342 6)2 x $3.99= $7.98 7)3 x x x 1000 = ) rounded to the nearest hundredth = )ten and thirteen thousandths = ) = 1.04

Mental Math # cm = ____ m 2.2 L = _____ mL m = _____ km mm = _____ cm 5.90 mL = _____ L g = _____ kg 7.1 mg = _____ g 8.3 km = _____ m g = _____ mg m = _____ cm

Mental Math # cm = 1.05 m 2.2 L = 2000 mL m = 5 km mm = 0.34 cm 5.90 mL = 0.09 L g = 0.6 kg 7.1 mg = g 8.3 km = 3000 m g = 10 mg m = 2000 cm

Mental Math # L = _____ mL m = _____km and _____m 3.59 km = _____ m cm = _____mm mL = _____L 6.69 mg = _____ g g = _____kg 8.9 km = _____ m g = _____ mg m = _____ km and _____m

Mental Math # L = 6000 mL m = 3 km and 700 m 3.59 km = m cm = 34 mm mL = L 6.69 mg = g g = kg 8.9 km = 9000 m g = 80 mg m = 2 km and 160 m

Mental Math # mm = _____ m m = _____ km and _____ m mL = _____ L and _____ mL 4.47 cm = _____ mm mL = _____ L 6.6 g = _____ mg 7.4 kg = _____ g 8.9 km = _____ hm 9.8 g = _____ dg m = _____ km and _____ m

Mental Math # mm = 3.9 m m = 4 km and 321 m mL = 5 L and 900 mL 4.47 cm = 470 mm mL = L 6.6 g = 6000 mg 7.4 kg = 4000 g 8.9 km = 90 hm 9.8 g = 80 dg m = 2 km and 2 m

Mental Math Practice # 1 1.Have $10, spend $1.25 = 2.Have $10, spend $3.45 = 3.Have $5, spend $2.30 = 4.Have $20, spend $10.02 = 5.Have $5, spend $2.89 = 6.Have $20, spend $14.37 = 7.Have $20, spend $18.50 = 8.Have $10, spend $3.90 = 9.Have $5, spend $0.78 = 10.Have $10, spend $8.10 =

Mental Math Practice # 1 1.Have$10, spend $1.25 = $ Have $10, spend $3.45 =$ Have $5, spend $2.30 = $ Have $20, spend $10.02 = $ Have $5, spend $2.89 = $ Have $20, spend $14.37 = $ Have $20, spend $18.50 = $ Have $10, spend $3.90 = $ Have $5, spend $0.78 = $ Have $10, spend $8.10 = $1.90

Mental Math Practice # 2 1.Have $10, spend $2.75 = 2.Have $10, spend $3.55 = 3.Have $5, spend $3.90 = 4.Have $20, spend $11.97 = 5.Have $5, spend $2.75 = 6.Have $20, spend $15.43 = 7.Have $20, spend $16.50 = 8.Have $10, spend $1.70 = 9.Have $5, spend $0.63 = 10.Have $10, spend $7.20 =

Mental Math Practice # 2 1.Have $10, spend $2.75 = $ Have $10, spend $3.55 = $ Have $5, spend $3.90 = $ Have $20, spend $11.97 = $ Have $5, spend $2.75 = $ Have $20, spend $15.43 = $ Have $20, spend $16.50 = $ Have $10, spend $1.70 = $ Have $5, spend $0.63 = $ Have $10, spend $7.20 = $2.80

Mental Math # 29 1.Have $10, spend $2.80 = 2.Have $10, spend $5.35 = 3.Have $5, spend $1.40 = 4.Have $20, spend $13.87 = 5.Have $5, spend $2.75 = 6.Have $20, spend $15.33 = 7.Have $20, spend $17.50 = 8.Have $10, spend $4.45 = 9.Have $5, spend $0.71 = 10.Have $10, spend $8.20 =

Mental Math # 29 1.Have $10, spend $2.80 = $ Have $10, spend $5.35 = $ Have $5, spend $1.40 = $ Have $20, spend $13.87 = $ Have $5, spend $2.75 = $ Have $20, spend $15.33 = $ Have $20, spend $17.50 = $ Have $10, spend $4.45 = $ Have $5, spend $0.71 = $ Have $10, spend $8.20 = $1.80

Mental Math # 30 1.Have $10, spend $3.35 = 2.Have $10, spend $7.40 = 3.Have $5, spend $0.84 = 4.Have $20, spend $18.99 = 5.Have $5, spend $2.25 = 6.Have $20, spend $16.29 = 7.Have $20, spend $18.50 = 8.Have $10, spend $4.95 = 9.Have $5, spend $0.30 = 10.Have $10, spend $6.70 =

Mental Math # 30 1.Have $10, spend $3.35 = $ Have $10, spend $7.40 = $ Have $5, spend $0.84 = $ Have $20, spend $18.99 = $ Have $5, spend $2.25 = $ Have $20, spend $16.29 = $ Have $20, spend $18.50 = $ Have $10, spend $4.95 = $ Have $5, spend $0.30 = $ Have $10, spend $6.70 = $3.30

Mental Math # 31 1.Have $10, spend $8.30 = 2.Have $10, spend $1.41 = 3.Have $5, spend $0.34 = 4.$ ? = $ ? = 10 6.Have $20, spend $11.50 = 7.Have $20, spend $7.68 = ? = 5 9.? = ? = 20

Mental Math # 31 1.Have $10, spend $8.30 = $ Have $10, spend $1.41 = $ Have $5, spend $0.34 = $ $ $6.01 = $ = 10 6.Have $20, spend $11.50 = $ Have $20, spend $7.68 = $ = = = 20

Mental Math # 32 1.Have $10, spend $5.15 = 2.Have $10, spend $3.57 = 3.Have $5, spend $1.92 = 4.$ ? = $ ? = 10 6.Have $20, spend $12.75 = 7.Have $20, spend $9.50 = ? = 1 9.? = ? = 20

Mental Math # 32 1.Have $10, spend $5.15 = $ Have $10, spend $3.57 = $ Have $5, spend $1.92 = $ $ $5.39 = $ = 10 6.Have $20, spend $12.75 = $ Have $20, spend $9.50 = $ = = = 20

Mental Math # = = = = = = = = = =

Mental Math # = = = = = = = = = = 306

Mental Math # = = = = = = = = = =

Mental Math # = = = = = = = = = = 290

Mental Math # = = = = = = = = = =

Mental Math # = = = = = = = = = = 1600

Mental Math # = = = = = = = = = =

Mental Math # = = = = = = = = = = 1100

Mental Math # = = = = = = = = = =

Mental Math # = = = = = = = = = = 305

Mental Math # = = = = = = = = = =

Mental Math # = = = = = = = = = = 208

Mental Math #  2 =  5 =  3 =  4 =  50 =  6 =  90 =  5 =  7 =  3 =

Mental Math #  2 =  5 =  3 =  4 =  50 =  6 =  90 =  5 =  7 =  3 = 114

Mental Math #  5 =  3 =  2 =  4 =  30 =  8 =  40 =  5 =  7 =  9 =

Mental Math #  5 =  3 =  2 =  4 =  30 =  8 =  40 =  5 =  7 =  9 = 21

Mental Math # 1 1) = 2) = 3) = 4)2 3 = 5)$ $3.85 = 6)65 + ? = 100 7)90 x 50 = 8)135  5 = 9)100 x 0.15 = 10) 6 0 =

Mental Math # 1 1) = 160 2) = ) = 8 4)2 3 = 8 5)$ $3.85 = $6.15 6) = 100 7)90 x 50 = )135  5 = 27 9)100 x 0.15 = 15 10) 6 0 = 1

Mental Math # 2 1) = 2) = 3)3 1 = 4) = 5)You give $5 for a purchase costing $2.55. What is your change? 6)? = )2800 in scientific notation is = 8)284  2 = 9)2.9 x 100 = 10) 37  10 =

Mental Math # 2 1) = 420 2) = 400 3) 3 1 = 3 4) = 7 5)You give $5 for a purchase costing $2.55. What is your change? $2.45 6) = ) 2800 in scientific notation is = 2.8 x )284  2 = 142 9)2.9 x 100 = ) 38.9  10 = 3.89

Mental Math # 3 1) = 2) = 3) = 4)234.5 in scientific notation = 5)You give $5 for a purchase costing $3.30. What is your change? 6) ? = )40 x 500 = 8)396  3 = 9)5.3 m equals ___ cm = 10) 82.9  10 =

Mental Math # 3 1) = 558 2) = ) = 8 4)234.5 in scientific notation = x )You give $5 for a purchase costing $3.30. What is your change? $1.70 6) = )40 x 500 = )396  3 = 132 9)5.3 m equals 530 cm 10) 82.9  10 = 8.29

Mental Math # 4 1) = 2) = 3)3 2 = 4) = 5)$ $6.75 = 6) ? = 100 7)3000 x 20 = 8)350  5 = 9)237  100 = 10)What does this represent?

Mental Math # 4 1) = ) = )3 2 = 9 4) = )$ $6.75 = $3.25 6) = 100 7)3000 x 20 = )350  5 = 70 9)237  100 = )2.304

Mental Math # 5 1) = 2) = 3) = 4)3 3 = 5)$ $11.95 = 6)? + 55 = 200 7)3 x 700 = 8)1000  50 = 9)100 x 0.65 = 10) 636  3

Mental Math # 5 1) = 350 2) = ) = 8.4 4) 3 3 = 27 5)$ $11.95 = $8.05 6) = 200 7)3 x 700 = )1000  50 = 20 9)100 x 0.65 = 65 10) 636  3 = 212

Mental Math # 6 1) = 2)3 0 = 3) = 4) = 5)$ $59.00 = 6)? + 85 = 200 7)200 x 40 = 8)1000  20 = 9)100 x 4.5 = 10) 842  2

Mental Math # 6 1) = 455 2)3 0 = 1 3) = 9.3 4) = 460 5)$ $59.00 = $ ) = 200 7)200 x 40 = )1000  20 = 50 9)100 x 4.5 = ) 842  2 = 421

Mental Math # 7 1) = 2)2 4 = 3) = 4)35 0 = 5)$ $3.80 = 6)65 + ? = 300 7)90 x 30 = 8)15cm equals __dm = 9)1000 x 0.15 = 10) 560  5 =

Mental Math # 7 1) = 235 2)2 4 = 16 3) = 8.8 4)35 0 = 1 5)$ $3.80 = $6.20 6) = 300 7)90 x 30 = )15cm equals 1.5 dm 9)1000 x 0.15 = ) 560  5 = 112

Mental Math # 8 1) = 2)8m equals ___dm 3) = 4)5 1 = 5)$ $6.99 = 6)95 + ? = 300 7)500 x 70 = 8)550  5 = 9)10 x 1.33 = 10)  100 =

Mental Math # 8 1) = 375 2) 8m equals 80 dm = 3) = 9.8 4) 5 1 = 5 5)$ $6.99 = $ ) = 300 7)500 x 70 = )550  5 = 110 9)10 x 1.33 = )  100 = 3.611

Mental Math # 9 1) in scientific notation = 2)8 0 = 3)$ $ = 4) = 5)$ $2.10 = 6) ? = )600 x 3 = 8)446  4 = 9)2.11 x 1000 = 10)  100 =

Mental Math # 9 1) in scientific notation = 8.41 x )8 0 = 1 3)$ $ = $ ) = )$ $2.10 = $7.90 6) = )600 x 3 = )446  4 = 111 R2 9)2.11 x 1000 = )  100 = 7.622

Mental Math # 10 1) in scientific notation = 2)90 km equals ____ m 3) = 4)1000 – 230 = 5)$ $9.90 = 6)180 + ? = 500 7)500 x 20 = 8)559  5 = 9)10 x 27.3 = 10)  100 =

Mental Math # 10 1)355.5 in scientific notation = x )90km equals m 3) = 9.6 4)1000 – 230 = 770 5)$ $9.90 = $ ) = 500 7)500 x 20 = )559  5 = 111 R4 9)10 x 27.3 = )  100 = 5.901

Mental Math # 11 1)If = 1, then = 2) in scientific notation = 3)7.95m equals ____cm 4) = 5)1000 – 440 = 6)You give $10.00 for a purchase costing $6.92. What is your change? 7)? = )672  6 = 9)769.1  10 = 10)3.4 x 10 2 =

Mental Math # 11 1)If = 1, then = ) in scientific notation = 5.3 x )7.95m equals 795cm 4) = 8.5 5)1000 – 440 = 560 6)You give $10.00 for a purchase costing $6.92. What is your change? $3.08 7) = )672  6 = 112 9)769.1  10 = )3.4 x 10 2 = 340

Mental Math # 12 1)If = 1, then = 2) = 3) = 4) = 5)$ $6.75 = 6) ? = 100 7)3000 x 20 = 8)350  5 = 9)4.2 x 1000 = 10) 237  10 =

Mental Math # 12 1)If =1, then= 2.3 2) = 3.85 x ) = ) = )$ $6.75 = $3.25 6) = 100 7)3000 x 20 = )350  5 = 70 9)4.2 x 1000 = ) 237  10 = 23.7

Mental Math # 13 1)Two squared added to three squared = 2)2L equals ___ mL = 3) = 4) = 5)You give $5 for a purchase costing $2.55. What is your change? 6)? = )200 x 80 = 8)384  2 = 9)2.9 x 100 = 10) 37  10 =

Mental Math # 13 1)Two squared added to three squared = 13 2) 2L equals 2000 mL = 3)The difference of 5 2 and 2 2 = 4) = )You give $5 for a purchase costing $2.55. What is your change? $2.45 6) = )200 x 80 = )384  2 = 192 9)2.9 x 100 = ) 37  10 = 3.7

Mental Math # 14 1)53 dam = ____ m 2)2 x 10 3 = 3)The difference of 5 2 and 2 2 = 4) = 5)You give $5 for a purchase costing $3.30. What is your change? 6) ? = )40 x 500 = 8)396  3 = 9)5.3 x 100 = 10)82  10 =

Mental Math # 14 1)53 dam = 530 m 2)2 x 10 3 = )The difference of 5 2 and 2 2 = 21 4) = 8.9 5)You give $5 for a purchase costing $3.30. What is your change? $1.70 6) = )40 x 500 = )396  3 = 132 9)5.3 x 100 = ) 82  10 = 8.2

Mental Math # 15 1) = 2) = 3) = 4) = 5)You give $10 for a purchase costing $5.99. What is your change? 6) ? = )50 x 60 = 8)784  7 = 9)47.3 x 10 = 10)2444  100

Mental Math # 15 1) = 373 2) = ) = ) = 7.9 5)You give $10 for a purchase costing $5.99. What is your change? $4.01 6) = )50 x 60 = )784  7 = 112 9)47.3 x 10 = )2444  100 = 24.44

Mental Math # 16 1) = 2) = 3) = 4)8.9 – 4.8 = 5)You give $20 for a purchase costing $1.90 What is your change? 6) ? = )90 x 20 = 8)575  5 = 9)0.633 x 100 = 10)71.4  10

Mental Math # 16 1) = ) = ) = 19 4)8.9 – 4.8 = 4.1 5)You give $20 for a purchase costing $1.90 What is your change? $ ) = )90 x 20 = )575  5 = 115 9)0.633 x 100 = )71.4  10 = 7.14

Mental Math # 17 1) = 2) = 3) = 4)10.9 – 3.5 = 5)You give $20 for a purchase costing $4.30 What is your change? 6) ? = )The sum of two cubed and two squared = 8)726  6 = 9)11.5 x 100 = 10)51.37  10 =

Mental Math # 17 1) = ) = ) =20.2 4)10.9 – 3.5 = 7.4 5)You give $20 for a purchase costing $4.30 What is your change? $ ) = )The sum of two cubed and two squared = 12 8)726  6 = 121 9)11.5 x 100 = )51.37  10 = 5.137

Mental Math # 18 1)Which is larger –4 or -7 = 2) = 3) = 4)8.4 – 3.1 = 5)You give $100 for a purchase costing $65.00 What is your change? 6) ? = )3100 x 10 = 8)805  5 = 9)5.3 x 100 = 10)1.3  10 =

Mental Math # 18 1)Which is larger –4 or -7 = -4 2) = -2 3) = )8.4 – 3.1 = 5.3 5)You give $100 for a purchase costing $65.00 What is your change? $ ) = )3100 x 10 = )805  5 = 161 9)5.3 x 100 = )1.3  10 = 0.13

Mental Math # 19 1)(-5) + (-3) = 2)(+8) + (-2) = 3)(-2) + (-4) = 4)(-5) + (+10) 5)You owe you friend $20. You earn $15 babysitting. What is your net worth? 6)(50) - (-10) = 7) (-5) + (+3) = 8) = 9)575  5 = 10) =

Mental Math # 19 1)(-5) + (-3) = -8 2)(+8) + (-2) = +6 3)(-2) + (-4) = -6 4)(-5) + (+10)= +5 5)You owe you friend $20. You earn $15 babysitting. What is your net worth? $-5 6)(50) - (-10) = 60 7) (-5) + (+3) = -2 8) = +4 9)575  5 = ) = -12

Mental Math # 20 1)(-6) + (-3) = 2)(8) + (-2) = 3)(-2) - (-4) = 4)(5) x (-10) = 5)You owe you friend $20. You earn $8. What is your net worth? 6)(50) - (-10) = 7) (-5) + (+3) = 8)-20 x -60 = 9)555  -5 = 10) 2 groups of -10 =

Mental Math # 20 1)(-6) + (-3) = -9 2)(8) + (-2) = 6 3)(-2) - (-4) = +2 4)(5) x (-10) -50 5)You owe you friend $20. You earn $8. What is your net worth? $-12 6)(50) - (-10) = 60 7) (-5) + (+3) = -2 8)-20 x -60 = )555  -5 = ) 2 groups of -10 = -20

Mental Math # 21 1)(-2) + (+7) = 2)(-8) - (-5) = 3)(-5) - (-10) = 4)(-6) x (-5) = 5)You have $50. You earn $20 babysitting. You purchase two tickets for a concert costing $10 each. What is your net worth? 6)Negative 10 squared = 7) (+5) + (-3) = 8)500 x -7 = 9)-448  -2 = 10) Yesterday we earn $230 selling cotton candy. Last night we earned $150. Our expenses so far is $20. What is our net profit. =

Mental Math # 21 1)(-2) + (+7) = +5 2)(-8) - (-5) = -3 3)(-5) - (-10) = +5 4)(-6) x (-5) = 30 5)You have $50. You earn $20 babysitting. You purchase two tickets for a concert costing $10 each. What is your net worth? $50 6)Negative 10 squared = 100 7) (+5) + (-3) = +2 8)500 x -7 = )-448  -2 = ) Yesterday we earn $230 selling cotton candy. Last night we earned $150. Our expenses so far is $20. What is our net profit. = $360

Mental Math # 22 1)(-12) - (+3) = 2)(-2) - (-5) = 3)(-5) (-10) = 4) = 5)You owe $60. You earn $5 an hour babysitting. You baby- sit for 5 hours. What is your net worth? 6)-2 3 = 7) (+5). (-3) = 8)-10 x –10 x –10 x -10 = 9)-4 + ? = -1 10) -60 = 3

Mental Math # 22 1)(-12) - (+3) = -15 2)(-2) - (-5) = +3 3)(-5) (-10) = +50 4) = -1 5)You owe $60. You earn $5 an hour babysitting. You baby-sit for 5 hours. What is your net worth? $-35 6)-2 3 = -8 7) (+5). (-3) = -15 8)-10 x –10 x –10 x -10 = ) = -1 10) -60 = -20 3

Mental Math # 23 1)3.1 x 10 2 = 2)(-5) + (+1) = 3) = 4) (+5) + (-4) = 5)You give $100 for a purchase costing $90.90 What is your change? 6)7 x x x 1 = 7)(-3) + (-2) = 8)729  3 = 9)5 2 = 10)(-3) – (-5) =

Mental Math # 23 1)3.1 x 10 2 = 310 2)(-5) + (+1) = -4 3) = )(+5) + (-4) = +1 5)You give $100 for a purchase costing $90.90 What is your change? $9.10 6)7 x x x 1 = 753 7)(-3) + (-2) = -5 8)729  3 = 243 9)5 2 = 25 10)(-3) – (-5) = +2

Mental Math # 24 1)2.3 x 10 2 = 2) = 3)5 0 = 4) = 5)$ $6.75 = 6) in scientific notation = 7)(-4) + (+4) = 8)255  5 = 9)4.2 x 1000 = 10) 2 3 =

Mental Math # 24 1)2.3 x 10 2 = 230 2) = 1 3)5 0 = 1 4) = )$ $6.75 = $3.25 6) in scientific notation = 3.45 x ) (-4) + (+4) = 0 8) 255  5 = 51 9)4.2 x 1000 = ) 2 3 = 8

Mental Math # 25 1)Double 3000 = 2)3 x x 100 = 3) = 4)You spend $5.48. You have $ What is your change? 5)$ $ = 6)670 + ? = )542 x 100 = 8)Three cubed = 9)844  4 = 10) 81 groups of 10 2 =

Mental Math # 25 1)Double 3000 = )3 x x 100 = ) = )You spend $5.48. You have $ What is your change? $4.52 5)$ $ = $ ) = )542 x 100 = )Three cubed = 27 9)844  4 = ) 81 groups of 10 2 = 8100

Mental Math # 26 1)Double 2000 and add 300 = 2)6 x x 10 0 = 3) = 4)You spend $5.70 You have $ What is your change? 5)Half of 400 minus 10 = 6)Multiple 9 groups of 50 = 7)62 x 100 = 8)Four squared = 9) 784  100 = 10) 3.2 x 10 3 =

Mental Math # 26 1)Double 2000 and add 300 = )6 x x 10 0 = 603 3) = )You spend $5.70 You have $ What is your change? $4.30 5)Half of 400 minus 10 = 190 6)Multiple 9 groups of 50 = 450 7)62 x 100 = )Four squared = 16 9) 784  100 = ) 3.2 x 10 3 = 3200

Mental Math # 27 1)The complement to a 60 0 angle = 2)The complement to a 25 0 angle = 3)The supplement to a angle = 4)The supplement to a angle = 5)The supplement to a 50 0 angle = 6)The complement to a 72 0 angle = 7)The complement to a 55 0 angle = 8)The supplement to a 70 0 angle = 9)The supplement to a 40 0 angle = 10)The reflex angle to a 70 0 angle =

Mental Math # 27 1)The complement to a 60 0 angle = )The complement to a 25 0 angle = )The supplement to a angle = )The supplement to a angle = )The supplement to a 50 0 angle = )The complement to a 72 0 angle = )The complement to a 55 0 angle = )The supplement to a 70 0 angle = )The supplement to a 40 0 angle = )The reflex angle to a 70 0 angle = 290 0

Mental Math # 28 1)The complement to a 75 0 angle = 2)The complement to a 29 0 angle = 3)The supplement to a angle = 4)The supplement to a angle = 5)The opposite angle to a 50 0 angle = 6)The reflex angle to a 50 0 angle = 7)The reflex angle to a angle = 8)The measure of angle a = 9)The measure of angle b = 10)The measure of angle c = a b c

Mental Math # 28 1)The complement to a 75 0 angle = )The complement to a 29 0 angle = )The supplement to a angle = )The supplement to a angle = )The opposite angle to a 50 0 angle = )The reflex angle to a 50 0 angle = )The reflex angle to a angle = )The measure of angle a = )The measure of angle b = )The measure of angle c = 45 0 a b c

Mental Math # 29 1)The m < a = 2)The m < b = 3)The m < c = 4)The m < d = 5)The m < e = 6)The m < f = 7)The m < g = 8)The m < h = 9)The m < i = 10)The m < j = d a 30 o cb ef 70 o g h i j

Mental Math # 29 1)The m < a = )The m < b = )The m < c = )The m < d = )The m < e = )The m < f = )The m < g = )The m < h = )The m < i = )The m < j = d a 30 o cb ef 70 o g h i j

Mental Math # 30 1)The m < a = 2)The m < b = 3)The m < c = 4)The m < d = 5)The m < e = 6)The m < f = 7)The m < g = 8)The m < h = 9)The m < i = 10)The m < j = d a 120 o c b e f 80 o g h i j

Mental Math # 30 1)The m < a = )The m < b = )The m < c = )The m < d = )The m < e = )The m < f = )The m < g = )The m < h = )The m < i = )The m < j = d a 120 o c b e f 80 o g h i j

Mental Math # 31 1) = 2) = 3) = 4)1000 – 230 = 5)$ $9.90 = 6)180 + ? = 500 7)500 x 20 = 8)5 x 10 1 = 9)10 x 27.3 = 10)  10 2 =

Mental Math # 31 1) = ) = ) = 9.6 4)1000 – 230 = 770 5)$ $9.90 = $ ) = 500 7)500 x 20 = )5 x 10 1 = 50 9)10 x 27.3 = )  10 2 = 5.901

Mental Math # 32 1)Double 650 = 2)6 x x x 1= 3) = 4)You spend $3.25 You have $ What is your change? 5)Half of 450 = 6)Multiple 40 groups of 60 = 7)6.5 x 100 = 8)Two squared added to three squared = 9)6366  3 = 10) 3 groups of 10 3 =

Mental Math # 32 1)Double 650 = )6 x x x 1 = ) = )You spend $3.25 You have $ What is your change? $6.75 5)Half of 450 = 225 6)Multiple 40 groups of 60 = )6.5 x 100 = 650 8)Two squared added to three squared = 13 9)6366  3 = ) 3 groups of 10 3 = 3000

Mental Math # 33 1)Double the sum of 100 and 150 = 2)7 x x 10 1 = 3) = 4)You spend $69.90 You have $ What is your change? 5) = 6)Multiple 100 groups of 3.5 = 7)The quotient of 35 and 5 = 8)Two cubed = 9) 900  10 2 = 10) 8 x 10 3 =

Mental Math # 33 1)Double the sum of 100 and 150 = 500 2)7 x x 10 1 = ) = 7.4 4)You spend $69.90 You have $ What is your change? $ ) = )Multiple 100 groups of 3.5 = 350 7)The quotient of 35 and 5 = 7 8)Two cubed = 8 9) 900  10 2 = 9 10) 8 x 10 3 = 8000

Mental Math # 34 1)The difference of 70 and 50 times 2 = 2)6 x x ) = 4)You spend $25.25 You have $ What is your change? 5) = 6)Multiple 100 groups of 47 = 7)The quotient of 50 and 10 = 8)Nine squared = 9) 760  10 2 = 10) 5 x 10 3 =

Mental Math # 34 1)The difference of 70 and 50 times 2 = 40 2)6 x x 10 0 = ) = )You spend $25.25 You have $ What is your change? $ ) = ) Multiple 100 groups of 47 = ) The quotient of 50 and 10 = 5 8) Nine squared = 81 9) 760  10 2 = ) 5 x 10 3 = 5000

Mental Math # 35 1)The product of 60 and 5 added to 49 = 2)50 x 10 2 = 3) = 4)You spend $79.45 You have $ What is your change? 5) = 6)Multiple 1000 groups of 2.3 = 7)The quotient of 555 and 5 = 8)Six squared, minus ten = 9) 570  10 0 = 10) 5 x x 10 1 =

Mental Math # 35 1)The product of 60 and 5 added to 49 = 349 2)50 x 10 2 = ) = 991 4)You spend $79.45 You have $ What is your change? $ ) = )Multiple 1000 groups of 2.3 = )The quotient of 555 and 5 = 111 8)Six squared, minus ten = 26 9) 570  10 0 = ) 5 x x 10 1 = 5090

Mental Math # 36 1)The difference of 400 and 200 multiplied by 4 = 2)7 x 10 3 = 3) = 4)You spend $29.52 You have $ What is your change? 5) = 6)Multiple 100 groups of 4.53 = 7)The quotient of 372 and 3 = 8)four squared, added to twenty = 9) 451  10 0 = 10) 2 x x 10 1 =

Mental Math # 36 1)The difference of 400 and 200 multiplied by 4 = 800 2)7 x 10 3 = ) = )You spend $29.52 You have $ What is your change? $ ) = )Multiple 100 groups of 4.53 = 453 7)The quotient of 372 and 3 = 124 8)four squared, added to twenty = 36 9) 451  10 0 = ) 2 x x 10 1 = 290

Mental Math # 37 1)Double 320 = 2)6 x x x 1= 3) = 4)You spend $3.89 You have $ What is your change? 5)Half of 660 = 6)Multiple 300 groups of 6 = 7)6.5 x 100 = 8)Two squared added to ten squared = 9)6339  3 = 10) 6 groups of 10 3 =

Mental Math # 37 1)Double 320 = 640 2)6 x x x 1= ) = )You spend $3.89 You have $ What is your change? $6.11 5)Half of 660 = 330 6)Multiple 300 groups of 6 = )6.5 x 100 = 650 8)Two squared added to ten squared = 104 9)6339  3 = ) 6 groups of 10 3 = 6000

Mental Math # 38 1)Double 700 = 2) in scientific notation = 3) = 4)You spend $5.65 You have $ What is your change? 5)Half of 2010 = 6)Multiple 5 groups of 700 = 7) 0.56 x 100 = 8)The difference of ten squared and five squared = 9)575  5 = 10) 2 groups of 10 3 =

Mental Math # 38 1)Double 700 = ) in scientific notation = 6.3 x ) = )You spend $5.65 You have $ What is your change? )Half of 2010 = )Multiple 5 groups of 700 = ) 0.56 x 100 = 56 8)The difference of ten squared and five squared = 75 9)575  5 = ) 2 groups of 10 3 = 2000

Mental Math # 39 1)Double 2000 added to 342 = 2) in scientific notation = 3)100.3 x 2 = 4)You spend $50.90 You have $ What is your change? 5)Half of 612 = 6)Multiple 200 groups of 70 = 7) 6.27 x 100 = 8)The sum of ten squared and five squared = 9)715  5 = 10) 8 groups of 10 2 =

Mental Math # 39 1)Double 2000 added to 342 = ) in scientific notation = 7.8 x )100.3 x 2 = )You spend $50.90 You have $ What is your change? $ )Half of 612 = 306 6)Multiple 200 groups of 70 = ) 6.27 x 100 = 627 8)The sum of ten squared and five squared = 125 9)715  5 = ) 8 groups of 10 2 = 800

Mental Math # 40 1)The difference between three groups of five hundred and two hundred = 2) in scientific notation = 3)200.2 x 3 = 4)You spend $65.00 You have four $20.00 bills. What is your change? $ 5)Half of 866 = 6)Multiple 20 groups of 150 = 7) 6.27 x 100 = 8)The sum of two squared and three squared = 9)655  5 = 10) 8.1 x 10 2 =

Mental Math # 40 1)The difference between three groups of five hundred and two hundred = ) in scientific notation = x )200.2 x 3 = )You spend $65.00 You have four $20.00 bills. What is your change? $ )Half of 866 = 433 6)Multiple 20 groups of 150 = ) 6.27 x 100 = 627 8)Sum of two squared and three squared = 13 9)655  5 = ) 8.1 x 10 2 = 810

Mental Math # 1 1)The difference between five groups of one hundred and fifty = 2) in scientific notation = 3)400.5 x 2 = 4)You spend $71.00 You have two $50 bills. What is your change? 5)Half of 1040 = 6)Multiple 30 groups of 70 = 7) 97 x 1000 = 8)Sum of ten cubed and five squared = 9)723  3 = 10) 52 x 10 3 =

Mental Math # 1 1)The difference between five groups of one hundred and fifty = 450 2) in scientific notation = 7.35 x )400.5 x 2 = 801 4)You spend $71.00 You have two $50 bills. What is your change? $ )Half of 1040 = 520 6)Multiple 30 groups of 70 = ) 97 x 1000 = )Sum of ten cubed and five squared = )723  3 = ) 52 x 10 3 =

Mental Math # 2 1)Three groups of one hundred increased by two hundred forty two = 2) in scientific notation = 3) = 4)You spend $36.05 You have two $20 bills. What is your change? 5)Half of 584 = 6)Multiple 35 groups of 200 = 7) 3.4 x 100 = 8)Sum of ten squared and four squared = 9) = 10) 79 x 10 2 =

Mental Math # 2 1)Three groups of one hundred increased by two hundred forty two = 542 2) in scientific notation = x ) = )You spend $36.05 You have two $20 bills. What is your change? $3.95 5)Half of 584 = 292 6)Multiple 35 groups of 200 = ) 3.4 x 100 = 340 8)Sum of ten squared and four squared = 116 9) = -9 10) 79 x 10 2 = 7900

Mental Math # 3 1)Three groups of two hundred decreased by one hundred = 2) in scientific notation = 3) = 4)You spend $24.50 You have a $50 bill. What is your change? 5)Half of 876 = 6)Multiple 3 groups of 500 = 7) 45 x 1000 = 8)Sum of three squared and five squared = 9) = 10) 9 x 10 3 =

Mental Math # 3 1)Three groups of two hundred decreased by one hundred = 500 2) in scientific notation = 4.7 x ) = )You spend $24.50 You have a $50 bill. What is your change? $ )Half of 876 = 438 6)Multiple 3 groups of 500 = ) 45 x 1000 = )Sum of three squared and five squared = 34 9) = -2 10) 9 x 10 3 = 9000

Mental Math # 4 1)Four groups of twenty decreased by one group of ten = 2)27O 000 in scientific notation = 3) = 4)You spend $45.00 You have three $20 bills. What is your change? 5)Half of 706 = 6)Multiple 3 groups of 800 = 7) 5 x x 100 = 8)Sum of three squared and ten squared = 9)(-5) – (-7) = 10) 5 x 10 3 =

Mental Math # 4 1)Four groups of twenty decreased by one group of ten = 70 2)27O 000 in scientific notation = 2.7 x ) = )You spend $45.00 You have three $20 bills. What is your change? $ )Half of 706 = 353 6)Multiple 3 groups of 800 = ) 5 x x 100 = )Sum of three squared and ten squared = 109 9)(-5) – (-7) = +2 10) 5 x 10 3 = 5000

Mental Math # 5 1)Four groups of fifty decreased by one group of twenty = 2) in scientific notation = 3) = 4)You spend $69.00 You have four $20 bills. What is your change? 5)Half of 524 = 6)5 groups of 500 = 7) 3 x x x 1 = 8)Sum of five squared and ten squared = 9)590 + ? = ) 6 x 10 3 =

Mental Math # 5 1)Four groups of fifty decreased by one group of twenty = 180 2) in scientific notation = 9.4 x ) = )You spend $69.00 You have four $20 bills. What is your change? $ )Half of 524 = 262 6)5 groups of 500 = ) 3 x x x 1 = )Sum of five squared and ten squared = 125 9) = ) 6 x 10 3 = 6000

Mental Math # 6 1)Eight groups of one hundred decreased by three hundred fifty = 2) in scientific notation = 3) = 4)You spend $57.35 You have six $10 bills. What is your change? 5)Half of 966 = 6)40 groups of 50 = 7) 3 x x x 10 = 8)Sum of two cubed and four squared = 9)270 + ? = ) 4 x 10 1 =

Mental Math # 6 1)Eight groups of one hundred decreased by three hundred fifty = 450 2) in scientific notation = 8.91 x ) = )You spend $57.35 You have six $10 bills. What is your change? $2.65 5)Half of 966 = 483 6)40 groups of 50 = ) 3 x x x 10 = )Sum of two cubed and four squared = 24 9) = ) 4 x 10 1 = 40

Mental Math # 7 1)Three groups of two hundred increased by three groups of fifty = 2) in scientific notation = 3) = 4)You spend $32.50 You have two $20 bills. What is your change? 5)972  3 = 6)30 groups of 500 = 7) (+3) + (-5) = 8)Sum of three cubed and ten squared = 9)I owe seven dollars to my friend. I get my allowance of ten dollars. What is my net worth? = 10) 78 x 10 0 =

Mental Math # 7 1)Three groups of two hundred increased by three groups of fifty = 750 2) in scientific notation = 5.55 x ) = 11 4)You spend $32.50 You have two $20 bills. What is your change? $7.50 5)972  3 = 324 6)30 groups of 500 = ) (+3) + (-5) = -2 8)Sum of three cubed and ten squared = 127 9)I owe seven dollars to my friend. I get my allowance of ten dollars. What is my net worth? = +3 10) 78 x 10 0 = 78

Mental Math # 8 1)Double 150 added to 198 = 2)341.5 in scientific notation = 3)123 x 3 = 4)You spend $40.20 You have five $ What is your change? 5)Half of 276 = 6)Multiple 90 groups of 90 = 7) (-5) - (-8) = 8)Two to the exponent four = 9)6/30 in lowest terms is = 10) 7 groups of 10 0 =

Mental Math # 8 1)Double 150 added to 198 = 498 2)341.5 in scientific notation = x )123 x 3 = 369 4)You spend $40.20 You have five $ What is your change? $9.80 5)Half of 276 = 138 6)Multiple 90 groups of 90 = ) (-5) - (-8) = +3 8)Two to the exponent four = 16 9)6/30 in lowest terms is = 1/5 10) 7 groups of 10 0 = 7

Mental Math # 9 1)Double 551 = 2) in scientific notation = 3) 312 x 3 = 4)You spend $73.90 You have four $ What is your change? 5)Half of 724 = 6)Multiple 40 groups of 600 = 7) (5) - (-4) = 8)Two to the exponent five plus five = 9)4/12 in lowest terms is = 10) 12/5 as a mixed number =

Mental Math # 9 1)Double 551 = ) in scientific notation = 4.05 x ) 312 x 3 = 936 4)You spend $73.90 You have four $ What is your change? $6.10 5)Half of 724 = 362 6)Multiple 40 groups of 600 = ) (5) - (-4) = +9 8)Two to the exponent five plus five = 37 9)4/12 in lowest terms is = 1/3 10) 12/5 as a mixed number = 2 2/5

Mental Math # 10 1)Double 623 = 2) in scientific notation = 3) 211 x 5 = 4)You spend $53.50 You have three $ What is your change? 5)Half of 872 = 6)Multiple 60 groups of 600 = 7) (1) + (-4) = 8)Five to the exponent two plus ten = 9)3/15 in lowest terms is = 10) 14/3 as a mixed number =

Mental Math # 10 1)Double 623 = ) in scientific notation = 8 x ) 211 x 5 = )You spend $53.50 You have three $ What is your change? $6.50 5)Half of 872 = 436 6)Multiple 60 groups of 600 = ) (1) + (-4) = -3 8)Five to the exponent two plus ten = 35 9)3/15 in lowest terms is = 1/5 10) 14/3 as a mixed number = 4 2/3

Mental Math # 11 1)Which is larger 2/11 or 2/9 = 2)Which is larger 5/11 or 4/7 = 3)Which is larger 0.8 or = 4)12/18 in lowest terms = 5)18/4 as a mixed number = 6)3/10 as a percent = 7) 2/25 as a percent = 8)0.05 as a percent = 9)131/100 as a decimal = 10) 9/10 of a bars added to 5/8 of a bar is closer to 1, 1 1/2 or 2 whole bars =

Mental Math # 11 1)Which is larger 2/11 or 2/9 = 2/9 2)Which is larger 5/11 or 4/7 = 4/7 3)Which is larger 0.8 or = 0.8 4)12/18 in lowest terms 2/3 5)18/4 as a mixed number = 4 1/2 6)3/10 as a percent = 30 % 7) 2/25 as a percent = 8% 8)0.05 as a percent = 5 % 9)131/100 as a decimal = ) 9/10 of a bars added to 5/8 of a bar is closer to 1, 1 1/2 or 2 whole bars = 1 1/2

Mental Math # 12 1)Which is larger 5/9 or 3/8 = 2)Which is larger 6/10 or 11/20 = 3)Which is larger 0.2 or = 4)6/15 in lowest terms 5)15/3 as a mixed number = 6)9/10 as a percent = 7) 11/20 as a percent = 8)0.18 as a percent = 9)235/100 as a decimal = 10) 5/12 of a bars added to 11/20 of a bar is closer to 1, 1 1/2 or 2 whole bars =

Mental Math # 12 1)Which is larger 5/9 or 3/8 = 5/9 2)Which is larger 6/10 or 11/20 = 6/10 3)Which is larger 0.2 or = 0.2 4)6/15 in lowest terms 2/5 5)15/3 as a mixed number = 5 6)9/10 as a percent = 90 % 7) 11/20 as a percent = 55% 8)0.18 as a percent = 18% 9)235/100 as a decimal = ) 5/12 of a bars added to 11/20 of a bar is closer to 1, 1 1/2 or 2 whole bars = 1

Mental Math # 13 1)Which is larger 11/20 or 7/18 = 2)Which is larger 20/40 or 5/8 = 3)Which is larger or = 4)16/20 in lowest terms = 5)7/2 as a mixed number = 6)1/5 of 20 = 7) 5/25 as a percent = 8)0.07 as a percent = 9)34/100 as a decimal = 10) 11/ /20 of a bar is closer to 1, 1 1/2 or 2 whole bars =

Mental Math # 13 1)Which is larger 11/20 or 7/18 = 11/20 2)Which is larger 20/40 or 5/8 = 5/8 3)Which is larger or = )16/20 in lowest terms = 4/5 5)7/2 as a mixed number = 3 1/2 6)1/5 of 20 = 4 7) 5/25 as a percent = 20% 8)0.07 as a percent = 7% 9)34/100 as a decimal = ) 11/ /20 of a bar is closer to 1, 1 1/2 or 2 whole bars = 1 1/2

Mental Math # 14 1)The diagram best represents what percent shaded? 30%, 50% or 70% 2)The diagram best represents what percent shaded? 30%, 50% or 70%

3) The diagram best represents what percent shaded? 30%, 50% or 70% 4) The diagram best represents what percent shaded? 25%, 50% or 75%

5) The diagram best represents what percent shaded? 38%, 50% or 66% 6) The diagram best represents what percent shaded? 33%, 53% or 73%

7) The diagram best represents what percent shaded? 30%, 50% or 70% 8) The diagram best represents what percent shaded? 20%, 40% or 60%

9) The diagram best represents what percent shaded? 25%, 50% or 75% 10) The diagram best represents what percent shaded? 25%, 50% or 75%

Mental Math # 14 1)The diagram best represents what percent shaded? 30%, 50% or 70% 2)The diagram best represents what percent shaded? 30%, 50% or 70%

3) The diagram best represents what percent shaded? 30%, 50% or 70% 4) The diagram best represents what percent shaded? 25%, 50% or 75%

5) The diagram best represents what percent shaded? 38%, 50% or 66% 6) The diagram best represents what percent shaded? 33%, 53% or 73%

7) The diagram best represents what percent shaded? 30%, 50% or 70% 8) The diagram best represents what percent shaded? 20%, 40% or 60%

9) The diagram best represents what percent shaded? 25%, 50% or 75% 10) The diagram best represents what percent shaded? 25%, 50% or 75%

Mental Math # 15 1)Double the sum of 100 and 150 = 2)7 x x 10 1 = 3) = 4)You spend $69.90 You have $ What is your change? 5) = 6)Multiple 100 groups of 3.5 = 7)The quotient of 35 and 5 = 8)Two cubed = 9) 900  10 2 = 10) 8 x 10 3 =

Mental Math # 15 1)Double the sum of 100 and 150 = 500 2)7 x x 10 1 = ) = -8 4)You spend $69.90 You have $ What is your change? $ ) = )Multiple 100 groups of 3.5 = 350 7)The quotient of 35 and 5 = 7 8)Two cubed = 8 9) 900  10 2 = 9 10) 8 x 10 3 = 8000

Mental Math # 16 1)The difference of 70 and 50 times 2 = 2)6 x x 10 0 = 3) = 4)You spend $25.25 You have $ What is your change? 5) = 6) Multiple 100 groups of 47 = 7) The quotient of 50 and 10 = 8) Nine squared = 9) 760  10 2 = 10) 5 x 10 3 =

Mental Math # 16 1)The difference of 70 and 50 times 2 = 40 2)6 x x 10 0 = ) = )You spend $25.25 You have $ What is your change? $ ) = ) Multiple 100 groups of 47 = ) The quotient of 50 and 10 = 5 8) Nine squared = 81 9) 760  10 2 = ) 5 x 10 3 = 5000

Mental Math # 17 1)Double 2000 added to 342 = 2) in scientific notation = 3)100.3 x 2 = 4)You spend $50.90 You have $ What is your change? 5)Half of 612 = 6)Multiple 200 groups of 70 = 7) $6.27 x 100 = 8)The sum of ten squared and five squared = 9)715  5 = 10) 8 groups of 10 2 =

Mental Math # 17 1)Double 2000 added to 342 = ) in scientific notation = 7.8 x )100.3 x 2 = )You spend $50.90 You have $ What is your change? $ )Half of 612 = 306 6)Multiple 200 groups of 70 = ) $6.27 x 100 = $627 8)The sum of ten squared and five squared = 125 9)715  5 = ) 8 groups of 10 2 = 800

Mental Math # 18 1)2 x 8 x 5 = 2)25 x 22 x 4 = 3)2 x 9 x 50 = 4)4 x 6 x 5 = 5)10 x 4 x 9 x 10 = 6)2 x 50 x 2 x 7 = 7)2 x 9 x 5 x 2 = 8)2 x 4 x 5 x 11 = 9)7 x 3 x 5 x 20 = 10) 2 x 25 x 50 =

Mental Math # 18 1)2 x 8 x 5 = 80 2)25 x 22 x 4 = )2 x 9 x 50 = 900 4)4 x 6 x 5 = 120 5)10 x 4 x 9 x 10 = )2 x 50 x 2 x 7 = )2 x 9 x 5 x 2 = 180 8)2 x 4 x 5 x 11 = 440 9)7 x 3 x 5 x 20 = ) 2 x 25 x 50 = 2500

Mental Math # 19 1)4 x 52 x 25 = 2)3 x 4 x 5 x 6 = 3)2 x 3 x 50 = 4)2 x 6 x 500 = 5)10 x 40 x 2 = 6)20 x 5 x 7 x 2 = 7)2 x 9 x 5 x 2 = 8)2 x 4 x 25 x 11 = 9)2 x 2 x 5 x 20 = 10) 2 x 9 x 4 x 5 x 0 =

Mental Math # 19 1)4 x 52 x 25 = )3 x 4 x 5 x 6 = 360 3)2 x 3 x 50 = 300 4)2 x 6 x 500 = )10 x 40 x 2 = 800 6)20 x 5 x 7 x 2 = )2 x 9 x 5 x 2 = 180 8)2 x 4 x 25 x 11 = )2 x 2 x 5 x 20 = ) 2 x 9 x 4 x 5 x 0 = 0

Mental Math # 20 1)6 x 15 x 2 = 2)3 x 5 x 5 x 2 = 3)4 x 5 x 25 x 4 = 4)50 x 6 x 2 x 6 = 5)50 x 4 x 12 = 6)2 x 5 x 7 x 2 = 7)20 x 13 x 5 = 8)4 x 25 x 56 = 9)9 x 2 x 50 x 9 = 10) 2 x 6 x 4 x 5 =

Mental Math # 20 1)6 x 15 x 2 = 180 2)3 x 5 x 5 x 2 = 150 3)4 x 5 x 25 x 4 = )50 x 6 x 2 x 6 = )50 x 4 x 12 = )2 x 5 x 7 x 2 = 140 7)20 x 13 x 5 = )4 x 25 x 56 = )9 x 2 x 50 x 9 = ) 2 x 6 x 4 x 5 = 240