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Understanding The uses of numbers

Understanding The uses of numbers. Skill Building Topic # 1. mass. Kilogram kg. Length. Meter m. TIme. Second s. Temperature. Kelvin K. Amount of A substance. Mole mol. Electric Current. Ampere A. Mega. M 10 6 Megabytes. Kilo. k 10 3. Deci. d 10 -1. Centi.

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Understanding The uses of numbers

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  1. Understanding The uses of numbers Skill Building Topic # 1

  2. mass • Kilogram kg

  3. Length • Meter m

  4. TIme • Second s

  5. Temperature • Kelvin K

  6. Amount of A substance • Mole mol

  7. Electric Current • Ampere A

  8. Mega • M 106 • Megabytes

  9. Kilo • k 103

  10. Deci • d 10-1

  11. Centi • c 10-2

  12. milli • m 10-3

  13. micro • µ 10-6

  14. nano • n 10-9

  15. pico • p 10-12

  16. Practice exercises • Which unit and prefix would one use to measure the following? • Diameter of a Sequoia tree • Diameter of a human hair • Time to blink

  17. Practice exercises • 4. Mass of a gallon of gasoline. • Mass of a cold virus. • Amount of aspirin in a tablet. • Mass of concrete in a parking lot.

  18. Practice exercises • Name the prefixes for each: • 1 x 103 →→ • 1 x 10-3 →→ • .01 →→ • 1 x 10-6 →→

  19. Word problems # 1 • An antacid tablet contains 168 mg of the active ingredient ranitidine hydrochloride. • How many grams of the compound are in the tablet?

  20. Word problems # 2 • There are 1.609 km in a mile. Determine the number of centimeters in a mile.

  21. Word problems # 3 • A paper clip is 3.2cm long. • What is the length in millimeters?

  22. Word problems # 4 • The average person in the United States uses 340 L of water daily. Convert this to milliliters.

  23. Word problems # 5 • A quart is approximately equal to 946 mL. How many liters are in 1 quart?

  24. Word problems # 6 • One hundred milliliters of rubbing alcohol has a mass of 120 g. What is the density of rubbing alcohol?

  25. Word problems # 7 • A ruby has a mass of 7.5 g and a volume of 1.9cm3. What is the density of this ruby?

  26. Word problems # 8 • What is the density of isopropyl alcohol if 5.00mL of it weigh 3.93 g?

  27. System International Units → SI • List one advantage that SI units have over the customary US units.

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