Converting between centimetres and millimetres
I can convert between centimetres and millimetres
Converting between centimetres and millimetres
I can convert between centimetres and millimetres
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- To convert between cm and mm, we can use the relationship between 1 cm and 10 mm.
- To convert between mm, and cm and mm, we can use partitioning.
- Estimating the length or height of an object helps us to decide which unit to use when measuring.
Keywords
Equivalent - When something is equivalent, it is equal in value.
Convert - When we can convert, we change the unit of measurement between millimetres and centimetres but the value remains the same.
Common misconception
E.g. 30 mm is not equivalent to 3 cm because 30 is a larger number.
10 mm are equivalent to 1 cm. Millimetres are smaller than centimetres and 10 mm are needed to make an equivalent length to 1 cm.
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Lesson video
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Starter quiz
6 Questions
10 and 8
20 and 7
20 and 9
30 and 1
10 and 3
70 and 2
Exit quiz
6 Questions
11 mm
35 mm
53 mm
68 mm
69 mm
79 mm
