Chapter 2: A Mathematical Toolkit Practice Test
 1. Prior to 1795, units of measurement were based on __________.
 a. powers of 10 b. the King's standard c. carefully calibrated standards d. local customs
 2. Solve the following problem and express the answer in scientific notation: 4.75 × 103 kg + 8.24 × 103 kg.
 a. 1.299 × 104 kg b. 12 990 kg c. 12.99 × 103 kg d. 1299 × 103 kg
 3. The multiplier for SI units with the prefix mega is __________.
 a. 1/1000 b. 1 000 000 c. 1/1 000 000 d. 1000
 4. The standard SI unit of mass is the __________.
 a. kilomole b. kilogram c. kilometer d. pound
 5. Express the quantity 5280 ft in scientific notation using SI.
 a. 5.28 × 103 ft b. 1.61 × 103 km c. 1.61 × 103 m d. 5.28 × 10-3 m
 6. The standard SI unit of time is the __________.
 a. solar day b. second c. parsec d. millisecond
 7. __________ is useful for writing numbers that are very large or very small.
 a. Scientific notation b. Accuracy c. Parallax d. Estimating
 8. Convert 243 ng to its equivalent in kilograms.
 a. 2.43 × 10-10 kg b. 2.43 × 10-12 kg c. 243 × 10-10 kg d. 2.43 × 1010 kg
 9. In order to convert a quantity expressed in one unit into the same quantity in a different unit, use a(n) __________.
 a. calculation coefficient b. notation factor c. algebraic quantity d. conversion factor
 10. The multiplier for SI units with the prefix femto is __________.
 a. 1/1 000 000 000 000 b. 1/1 000 000 000 c. 1/1 000 000 d. 1/1 000 000 000 000 000