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What are decimal numbers?

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A decimal is a way of writing a number that is not whole.

Decimal numbers are 'in between' numbers. For example, 10.4 is in between the numbers 10 and 11. It is more than 10, but less than 11.

Take care when reading the values of decimal numbers.

4.2 means 4 and 2 tenths.

4.20 means 4 and 2 tenths and 0 one-hundredths. The last zero does not need to be there.

4.02 means 4 and 0 tenths and 2 one-hundredths.

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Watch: Decimals

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NEW! Play Guardians: Defenders of Mathematica - the winter update. game

It's Mathematica as you鈥檝e never seen it before, with all-new festive backgrounds and costumes. Available for a limited time only. Use your maths skills to save the day before it's too late!

NEW! Play Guardians: Defenders of Mathematica - the winter update
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