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NAME DATE UNIT Converting Units Conversions Between British/U.S. and SI Units } British/U.S. System 1 in. 1ft 1 mi iqt 1 Ib SI 2.54 cm 0.305 m 1.61 km 0.946 L 4.448 N 1 1 1 Powers-of-Ten Prefixes Power 10 6 10 3 io- 2 10~ 3 10-6 io- 9 Prefix mega- kilo- centi- milli- micro- nano- Abbreviation M k c m M n Converting from one set of units to another involves multiplying by a conversion factor—a ratio of units that is equal to 1. Use the tables to find conversion factors to make the conversions specified below. 1. 745 mm = 2. 100 m = _ m km 3. 3.51 X 10- 7 s = 4. 4.5 mg = ns 11. 95 km - 12. 125 Ib = 13. 20.5 N = mi . N . Ib 14. exactly 1 gal (4 qt) = 5. 25 urn = _ 6. 1200 MJ = 7. 5 mA= _ m 15. exactly 100 yd (300 ft) = m 16. 750 mL = 8. 12 V = kV 9. 15 in. = 10. 15 mi = cm km 17. 75 km/h = 18. 75 km/h = 19. 35 mi/h = 20. 35 mi/h = qt _ mi/h _ m/s . km/h . m/s www.harcourtschoolsupply.com ® Harcourt Achieve Inc. All rights reserved. Unit 1, Tools of.Physical Science Physical Science, SV 0425-5
