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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

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