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# Lesson Worksheet: Converting between Imperial and Metric Units of Mass Mathematics

In this worksheet, we will practice using approximate equivalences to convert between metric and imperial units of mass.

**Q1: **

These bags of rice are all at the same price.

Which one is the best value?

*Hint*: 1 ounce (oz)
is approximately 28 g,
and 1 pound (lb)
is approximately 0.45 kg.

- AD
- BA
- CB
- DC

**Q2: **

Complete the following: 10 kilograms (lb).

*Hint*: 1 kilogram (kg) is approximately 2.2 pounds (lb).

Complete the following: 22 pounds (lb) (oz).

*Hint*: 1 pound (lb) is equal to 16 ounces (oz).

**Q3: **

The weight of a baby toy is 2 ounces. How many grams does it weigh?

*Hint*: 1 ounce
is approximately 28 grams.

**Q4: **

Complete the following: (lb).

*Hint*: 1 kilogram (kg)
is approximately 2.2 pounds (lb).

**Q5: **

Complete the following: .

*Hint*: 1 oz is approximately 28 grams.

**Q6: **

A person stands on a weight scale that reads 50 kg. Find their weight in pounds.

*Hint*: 10 kilograms (kg) is approximately
22 pounds (lb).

**Q7: **

Consider that 1,000 g is equal to 1 kg and that 1 kg is approximately equal to 2.2 lb.

Convert 2,000 grams to kilograms.

Approximately what is this mass in pounds?

**Q8: **

Convert 2 stones to pounds.

*Hint*: 1 stone = 14 pounds.

**Q9: **

1 ounce is approximately 28 grams.

Which of the following is closest to 22 oz?

- A610 g
- B440 g
- C220 g
- D396 g
- E616 g

**Q10: **

A bag of rice weighs 8 lb. Which of the following is the best estimation of this weight in kilograms?

*Hint*: 1 kg is
approximately 2.2 lb.

- A16 kg
- B4 kg
- C8 kg
- D6 kg
- E10 kg