# Introduction to Physical Science

## Chapter 2: Measurement

### Rounding

 1. The volume of one piece of metal is 14.45 cm3. The volume of a second piece of metal is 17.825 cm3. Round each volume to the nearest whole number. A) 14, 18 B) 14, 17 C) 15, 18 D) 15, 17 2. The masses of three objects are 8.225 g, 22.6 g, and 14.32 g. Round each value to the nearest tenth. A) 8.0, 23.0, 14.0 B) 8.2, 22.7, 14.2 C) 8.3, 22.6, 14.2 D) 8.2, 22.6, 14.3 3. The atomic mass of oxygen is 15.999, fluorine is 18.998, and neon is 20.180. Round these atomic masses to the nearest tenth. A) 16.0, 18.0, 21.0 B) 16.0, 18.0, 20.1 C) 16.0, 19.0, 20.2 D) 16.1, 19.1, 21.2 4. The speed of one train was 22.45 kilometers per hour. The speed of a second train was 12.55 kilometers per hour. Round each speed to the nearest tenth. A) 22.5, 12.6 B) 22.0, 12.0 C) 22.4, 12.5 D) 22.4, 12.7 5. Round the following numbers: 32.45 to the nearest ones place, 8.245 to the tenths place, and 10.465 to the hundredths place. A) 32.5, 8.2, 10.5 B) 32, 8.2, 10.47 C) 32.45, 8.2, 10 D) 32, 8.3, 10.5 6. The volume of one piece of metal is 112.125 cm3. The volume of a second piece of metal is 119.245 cm3. Round each volume to the nearest whole number. A) 113, 120 B) 112, 120 C) 113, 119 D) 112, 119 7. The masses of three objects are 12.444 g, 18.865 g, and 44.22 g. Round each value to the nearest tenth. A) 12.5, 19.0, 44.0 B) 12.44, 18.87, 44.22 C) 12.4, 18.9, 44.2 D) 12.4, 18.8, 44.3 8. The atomic mass of barium is 137.327, strontium is 87.62, and calcium is 40.078. Round these atomic masses to the nearest hundredth. A) 137.33, 87.62, 40.08 B) 137.34, 87.63, 40.08 C) 137.3, 87.6, 40.1 D) 137.00, 88.00, 40.00 9. Round the following numbers: 42.62 to the nearest ones place, 10.208 to the tenths place, and 99.6543 to the hundredths place. A) 43.6, 10.2, 99.6 B) 43, 10.2, 99.65 C) 43, 10, 100 D) 43.6, 10, 99.654 10. Round the following numbers: 4.005 to the nearest ones place, 13.205 to the tenths place, and 89.4285 to the hundredths place. A) 4.0, 13.2, 89.43 B) 4, 13.2, 89.42 C) 4, 13.2, 89.43 D) 4, 13, 89