1. State two units that are commonly used to measure mass. Common units for mass are kilograms (kg) and grams (g). 2. Convert the weight of a metal container from 5.3 tons to pounds. Given 1 ton = 2000 pounds, multiply: $$5.3 \text{ tons} \times 2000 \frac{\text{pounds}}{\text{ton}} = 10600 \text{ pounds}$$ 3. Convert the total weight of three parcels from pounds to kilograms. First, find total weight in pounds: $$9 + 5 + 6.5 = 20.5 \text{ pounds}$$ Next, convert pounds to kilograms using 1 pound = 0.454 kilograms: $$20.5 \times 0.454 = 9.307 \text{ kilograms}$$ Final answers: - Two units of mass: kilograms and grams. - Weight in pounds: 10600 pounds. - Total weight in kilograms: 9.307 kilograms.