LENGTH & DISTANCE

Measure and convert between centimetres, metres, and kilometres.

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CS.MU.1.1·Measuring and comparing lengths(I)CS.MU.2.1·Using standard measurement units (m, cm)(II)

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UNITS OF LENGTH

Length measures how long something is. The metric system uses millimetres (mm), centimetres (cm), metres (m), and kilometres (km). Key conversions: 10 mm = 1 cm, 100 cm = 1 m, 1000 m = 1 km. Choose the right unit for what you are measuring.

How many cm in 1 metre?

11 m = 100 cm

21 m = 1000 mm

= 100

LEADER TIP

Start with non-standard units (hand spans, pencils) before rulers. This builds understanding of what measurement means.

PRACTICE WITH THESE GAMES

Measurement Match

Greater / Smaller

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LENGTH & DISTANCE