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When we have the prefix (before a word) kilo it means 1000

1 kilogram = 1000 grams

1 kilometre = 1000 metres

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When we have the prefix (before a word) milli it means 1⁄1000

1000 millimetres = 1 metre

1000 millilitres = 1 litre

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When we have the prefix centi it means 1⁄100

100 centimetres = 1 metre

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Try these:

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