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Metric Length Conversions
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Metric Length Conversions
Help plan a pop-up sports day by choosing sensible units and converting lengths. Show your working where needed. Remember: 10 mm = 1 cm, 100 cm = 1 m, and 1,000 m = 1 km.
Choose and compare units
Use millimetres (mm), centimetres (cm), metres (m) or kilometres (km).
1.A coach is recording the length of a running track around a large park. Which unit is most suitable: mm, cm, m or km?
- mm
- cm
- m
- km
2.The team needs to measure the thickness of a foam marker. Which unit is most suitable: mm, cm, m or km?
- mm
- cm
- m
- km
3.Put these lengths in order from shortest to longest: 1.2 m, 115 cm, 1,250 mm. Convert them to centimetres first.
Convert for sports day
Write each equivalent length. Include the unit in every answer.
4.The relay baton is 280 mm long. Convert its length to centimetres.
5.A long-jump runway is 35 m long. Convert its length to centimetres.
6.A length of safety rope measures 4,600 mm. Convert it to metres.
7.A walking route is 2.4 km long. How many metres is the route?
8.Layla has 1.8 m of bunting and adds another 75 cm. What is the total length in centimetres? Show your conversion.
9.A 3 m ribbon is cut into 4 equal pieces. How many centimetres long is each piece?
10.The course marshal has 5,000 mm of tape. They use 1.35 m to mark a start line. How much tape remains, in metres?
11.A student says, “650 cm is the same as 65 m.” Is the student correct? Explain the conversion and give the correct length in metres.
12.Create a sensible length for each sports-day item, using a suitable metric unit: the thickness of a card, the length of a skipping rope, and the distance of a fun run. Give one example for each.
2 printable pages
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