2. HONK You can do it! HONK Right behind you! HONK You go goose! HONK Don’t give up! HONK Good job!

3. FACTOR – LABEL Method ALWAYS works because of these two principles: A fraction equals ______ when the _______________ and __________________ are equivalent Anything ______________ by ONE is _______________ ONE NUMERATOR DENOMINATOR MULTIPLIED UNCHANGED

4. 3 days = _________ s 255 inches = _________ m 2.54 cm = 1 inch 3 days X 255 in X 1 day 24 hr X 1 hr 60 min 60 sec 1 min X= 1 in 2.54 cm X 259,200 s 100 cm 1 m = 6.48 m

5. 7,000 cm 3 = ________ m 3 600,000 s = ________ weeks 7000 cm 3 X 100 cm 1 m X 100 cm 1 m 100 cm X =.007 m 3 600,000 s X 60 s 1 min X 60 min 1 hr 1 day 24 hr X = X 7 days 1 week.992 wk

6. 25 m/s = ________ km/hr 180 mph = _________ m/s 1.61 km = 1 mile 1000 m = 1 km 1.61 km = 1 mile 1000 m = 1 km 25 m s X 1000 m 1 km X 1 min 60 s 60 min 1 hr X = 90 km/hr 180 mi hr X 1 mi 1.61 km X 1 km 1000 m 1 hr 60 min X = 80.5 m/s 1 min 60 s X

7. Writing numbers as powers of TEN 6 x 10 x 10 x 10 x 10 x 10600,000 = 6 x 10 5 =.00007 = 7  10  10  10  10  10 = 10 10 10 10 10 7 x x x x x 1 1 1 1 1 = 7 x 1 10 5 = 7 x 10 -5

8. 34,000,000 =3.4x 10 7.0000008 =.000678 = 72.5 =.00000000099 = 8 x 10 -7 6.78 x 10 -4 7.25 x 10 1 9.9 x 10 -10

9. “ TIMES TEN TO THE ” 8.2 x 10 -9 7.4 x 10 11 1.1 x 10 -20

10. BASE UNITS METER m LITER l or L GRAM g

11. Pico p 10 -12 TeraT 10 12 Nanon 10 -9 GigaG 10 9 Micro  10 -6 Mega M 10 6 Millim 10 -3 Kilo k 10 3 Centic 10 -2 Hecto h 10 2 Decid 10 -1 Deka da 10 1

12. 8.1  L = ____________ML 25 pm = ______ cm 8.1  L X ---------------- X ---------------- = To base unitTo desired unit L L L 1 1 x 10 -6 L ML1 1 x 10 6 8.1 x 10 -12 ML 25 pm X ---------------- X ---------------- = To base unitTo desired unit pm m 1 1 x 10 -12 m cm1 1 x 10 -2 2.5 x 10 -9 cm

13. IMPORTANT NEEDED MEANINGFUL

14. 1. Non-zeros ARE significant 1243 sig figs 46.714 sig figs 2. Zeros between sig figs ARE significant 400,0016 sig figs 30.53 sig figs 3. Place-holders ARE NOT significant 3001 sig figs.00252 sig figs 4. Exact zeros ARE significant 3.003 sig figs.202 sig figs

15. 1. Non-zeros ARE significant 2. Zeros between non-zeros ARE significant 3. Place-holders ARE NOT significant 4. Exact zeros ARE significant 90.02 2300.00005.0402 1.0020 4 sig figs 2 sig figs 1 sig fig 3 sig figs 5 sig figs

16. 1. Non-zeros ARE significant 2. Zeros between sig figs ARE significant 3. Place-holders ARE NOT significant 4. Exact zeros ARE significant 200 200.0 2020.002.200 1 sig figs 4 sig figs 3 sig fig 1 sig figs 3 sig figs

17. 1 sig fig 2 sig figs 3 sig figs 4 sig figs 7 sig figs 20,000 23,000 23,500 23,460 23,456.79

18. 8.1 m X ---------------- X ---------------- = m 1 100 cm 2.54 cm 1 inch 318.8976 cm 2 sig figs Round to 2 sig figs 320 cm