 # Converting Between Metric and Imperial Units by Rounding

In this worksheet, students use rounding to gain approximate conversions between metric and imperial units. Key stage:  KS 3

Curriculum topic:   Number

Curriculum subtopic:   Round/Approximate Numbers Appropriately

Difficulty level:   ### QUESTION 1 of 10

In this worksheet, we will use rounding to convert between imperial and metric units.

Imperial units can be converted into approximate metric equivalents by knowing the following conversions:

1 m = 3 ft
8 km = 5 miles
1 kg = 2.2 lbs
30 g = 1 ounce
1 litre = 2 pints

Example 1

Approximately how many metres are equivalent to 30 ft ?

1 m = 3 ft
1/3 m = 1 ft
30 × 1/3 m = 30 ft
10 m = 30 ft

Example 2

Approximately how many km are equivalent to 17 miles ?

8 km = 5 miles
8/5 km = 1 mile
17 × 8/5 km = 17 miles
27.2 km = 17 miles

Approximately how many metres are equivalent to 32 ft?

(All answers in this worksheet are whole numbers. Just write the number.)

Approximately how many metres are equivalent to 24 ft?

Just write the number.

Approximately how many kg are equivalent to 11 pounds?

Just write the number.

Approximately how many litres are equivalent to 40 pints?

Just write the number.

Approximately how many kg are equivalent to 34 pounds?

Just write the number.

Approximately how many km are equivalent to 23 miles?

Just write the number.

Approximately how many metres are equivalent to 20 ft?

Just write the number.

Approximately how many kg are equivalent to 41 pounds?

Just write the number.

Approximately how many metres are equivalent to 28 ft?

Just write the number.

Approximately how many km are equivalent to 15 miles?

Just write the number.

• Question 1

Approximately how many metres are equivalent to 32 ft?

(All answers in this worksheet are whole numbers. Just write the number.)

11
• Question 2

Approximately how many metres are equivalent to 24 ft?

Just write the number.

8
• Question 3

Approximately how many kg are equivalent to 11 pounds?

Just write the number.

5
• Question 4

Approximately how many litres are equivalent to 40 pints?

Just write the number.

20
• Question 5

Approximately how many kg are equivalent to 34 pounds?

Just write the number.

15
• Question 6

Approximately how many km are equivalent to 23 miles?

Just write the number.

37
• Question 7

Approximately how many metres are equivalent to 20 ft?

Just write the number.

7
• Question 8

Approximately how many kg are equivalent to 41 pounds?

Just write the number.

19
• Question 9

Approximately how many metres are equivalent to 28 ft?

Just write the number.

9
• Question 10

Approximately how many km are equivalent to 15 miles?

Just write the number.

24
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