Math review Fourth Grade
Review 43 1500 ÷ 30 = Estimate. 32,921 – 24, 745 Find the sum. 45 + 7 + 203 + 591 + 2 Find the product. 72 x 66 Estimate Addition Subtraction Multiplication Find the quotient. 1500 ÷ 30 = Find the perimeter of a square with the sides of 13 cm. I am thinking of a number that is greater than 180 and less than 190. The number is divisible by 9. What is the number? Division Geometry Bonus
Solution 43 Estimate. 32,921 – 24, 745 30,000 – 20,000 = 10,000 Find the sum. 45 + 7 + 203 + 591 + 2 808 Find the product. 72 x 66 4752 Estimate Addition Subtraction Multiplication Find the quotient. 1500 ÷ 30 =50 Find the perimeter of a square with the sides of 13 cm. 13cm x 4 = 52 cm I am thinking of a number that is greater than 180 and less than 190. The number is divisible by 9. What is the number? 189 Division Geometry Bonus
Review 44 Estimate. 567 + 238 + 909 = Find the difference. 457,203 - 5,912 Find the product. 63 x 81 Estimate Addition Subtraction Multiplication Find the quotient. 1600 ÷ 400 = Find the perimeter of a square with the sides of 22 m. Each picnic table at the park seats 8 people. There are 316 people at the park. How many full tables are there in the park? Division Geometry Bonus
Solution 44 Estimate. 567 + 238 + 909 = 600 + 200 + 900 1700 Find the difference. 457,203 - 5,912 451,291 Find the product. 63 x 81 5,103 Estimate Addition Subtraction Multiplication Find the quotient. 1600 ÷ 400 = 4 Find the perimeter of a square with the sides of 22 m. 22m x 4 = 88 m Each picnic table at the park seats 8 people. There are 316 people at the park. How many full tables are there in the park? 316 ÷ 8 = 39 r 4 39 full tables Division Geometry Bonus
Review 45 18,000 ÷ 30 = Estimate. 423,509 – 192,304 Find the sum. 23 + 67 + 4 + 691+1,682 Find the product. 84 x 71 Estimate Addition Subtraction Multiplication Find the quotient. 18,000 ÷ 30 = Find the perimeter of a rectangle with the length of 5 in. and the width of 3 in. Sheila received grades of 85, 90, and 89 on her math tests. What was her mean grade? Division Geometry Bonus
Solution 45 Estimate. 423,509 – 192,304 400,000 – 200,000 =200,000 Front end: 4 -1 = 300,000 Find the sum. 23 + 67 + 4 + 691+1,682 2467 Find the product. 84 x 71 5964 Estimate Addition Subtraction Multiplication Find the quotient. 18,000 ÷ 30 = 600 Find the perimeter of a rectangle with the length of 5 in. and the width of 3 in. (5 in + 3 in)2 = 16in Sheila received grades of 85, 90, and 89 on her math tests. What was her mean grade? (85+90+89)÷3 = 88 Division Geometry Bonus
Review 46 Estimate. 456 + 721 + 893 Find the difference. 236,746 - 91,682 Find the product. 75 x 26 Estimate Addition Subtraction Multiplication Find the quotient. 72,000 ÷ 900 = Find the perimeter of a rectangle with the length of 6 yd. and the width of 4 yd. There are 5 teams in a soccer tournement. Each team must play each other once. How many games must be scheduled? Division Geometry Bonus
Solution 46 Estimate. 456 + 721 + 893 Rounding: 500+700+900=2100 front end: 4 + 7+ 8 = 1900 Find the difference. 236,746 - 91,682 145,064 Find the product. 75 x 26 1950 Estimate Addition Subtraction Multiplication Find the quotient. 72,000 ÷ 900 = 80 Find the perimeter of a rectangle with the length of 6 yd. and the width of 4 yd. (6 + 4)2 = 20 yd. There are 5 teams in a soccer tournament. Each team must play each other once. How many games must be scheduled? 4 + 3 + 2 + 1 = 10 games Division Geometry Bonus
Review 47 Estimate. 54,708 – 28,250 Find the sum. 607 + 45 + 2,390 + 503 Find the product. 81 x 74 Estimate Addition Subtraction Multiplication Find the quotient. 56,000 ÷ 800 = Find the perimeter of a rectangle with the length of 5 ft. and the width of 2 ft. Evaluate. 50 + 10 x 10 - 2 Division Geometry Bonus
Review 48 Estimate. 607 + 380 + 211 Find the difference. 607,45 2 – 390,503 Find the product. 65 x 44 Estimate Addition Subtraction Multiplication Find the quotient. 440,000 ÷ 40 = Find the perimeter of a rectangle with the length of 15 m and the width of 4 m. If today were October 22, how many days would be left in the current year? Division Geometry Bonus
Solution 47 3,545 5,994 70 148 Rounding 20,000 Front End 30,000 Estimate. 54,708 – 28,250 Rounding 20,000 Front End 30,000 Find the sum. 607 + 45 + 2,390 + 503 3,545 Find the product. 81 x 74 5,994 Estimate Addition Subtraction Multiplication Find the quotient. 56,000 ÷ 800 = 70 Find the perimeter of a rectangle with the length of 5 ft. and the width of 2 ft. (5 ft + 2 ft)2 = 14 ft. Evaluate. 50 + 10 x 10 – 2 50 + 100 – 2 148 Division Geometry Bonus
Solution 48 216,949 2860 11,000 70 days 1200 rounding 1100 front end Estimate. 607 + 380 + 211 1200 rounding 1100 front end Find the difference. 607,45 2 – 390,503 216,949 Find the product. 65 x 44 2860 Estimate Addition Subtraction Multiplication Find the quotient. 440,000 ÷ 40 = 11,000 Find the perimeter of a rectangle with the length of 15 m and the width of 4 m. (15 + 4)2 = 38 m If today were October 22, how many days would be left in the current year? 31 – 22 + 30 + 31 70 days Division Geometry Bonus