# 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.

• 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

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