Adding centimetres to metres

Introduced in the Year 5 curriculum as: "Convert between different units of metric measure (for example, kilometre and metre; centimetre and metre; centimetre and millimetre; gram and kilogram; litre and millilitre)"

We can't add centimetres to metres unless we convert them to the same unit - both in cm, or both in m.


Example 1

2m + 30cm = 200cm + 30cm = 230cm

change to cm (helpful reminder: 100cm = 1m)


Example 2

0.5m + 40cm = 50cm + 40cm = 90cm

change to cm


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