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345
Change metres to centimetres, then add forty-five.
Class 3 · English Medium · Pearson Edexcel · Mathematics
Measurement and unit conversion
Explore measurement and unit conversion with an example and your own answers.
About this lesson and its coverage
Original Kidemy foundation practice · Read the example, write your answers, then check. This starter is shared across class versions; it is not a complete board-specific lesson or course.
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Learn the idea
Choose a suitable unit. Metres measure length, grams measure mass and millilitres measure capacity. Convert before comparing unlike units.
Worked example
2 m 30 cm = 230 cm because 1 metre is 100 centimetres.
- Read the example and explain which rule or evidence it uses.
- Try each task yourself, then compare the answer and its reason.
Your written practice
Show your working on paper. Check your answer, then choose Next.
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2000
One kilogram equals one thousand grams.
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500
One litre equals one thousand millilitres.
Take it further
Apply the idea in a new situation and explain your method. Open writing needs a guardian or teacher to review it.
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408
Four metres are four hundred centimetres; add eight.
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3250
Three litres are three thousand millilitres.
Write in your own words. A guardian or teacher should review this response.
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1 kg is 1000 g, which is 100 g more than 900 g.
Use a common mass unit before comparing.
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