Measurement

In Key Stage 2 you extend your measurement skills to cover unit conversion, perimeter and area of different shapes, volume, and angle measurement. These skills connect directly to real life — building, cooking, travel, and design.

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Metric Units and Conversions

You need to know the common metric units and how to convert between them.

Length:

Unit	Conversion
10 mm	= 1 cm
100 cm	= 1 m
1,000 m	= 1 km

Mass:

Unit	Conversion
1,000 g	= 1 kg
1,000 kg	= 1 tonne

Capacity:

Unit	Conversion
1,000 ml	= 1 litre
100 cl	= 1 litre

Examples:

• 3.5 km = 3,500 m. (multiply by 1,000)
• 450 cm = 4.5 m. (divide by 100)
• 2.4 kg = 2,400 g. (multiply by 1,000)
• 750 ml = 0.75 litres. (divide by 1,000)

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Perimeter

Perimeter is the total distance around the outside of a shape.