Converting units of length
I can use knowledge of multiplication and division to convert units of length.
Converting units of length
I can use knowledge of multiplication and division to convert units of length.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- There are 10 mm in 1 cm.
- There are 100 cm in 1 m.
- There are 1,000 m in 1 km.
- There are 1,000 mm in 1 m.
- There are 10 dm in 1 m.
Keywords
Convert - To convert means to change a value or expression from one form to another. In this context it means to change from one unit of measurement to another such as from cm to mm.
Decimetre - A decimetre is a metric unit of length, equal to one-tenth of a metre. Decimetre can be abbreviated to dm.
Common misconception
Children may confuse when to multiply or when to divide.
Encourage children to think about which unit of measure is larger e.g. km are larger than m. In a given amount, there will be fewer of the larger unit so we need to divide.
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
400
40
4
60
600
0
3.1
310
57.6
576
2.3
23
Exit quiz
6 Questions
103 mm
130 mm
1,300 mm
1.3 m
10.3 m
25 dm
2.5 m
250 dm
2,500 cm
2,500 mm