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Hundredths (age 8+)

Count up and down in hundredths; recognise that hundredths arise when dividing an object by 100 or dividing tenths by 10

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What a learner can do afterwards

  • Count from 3/100 to 12/100 in hundredths
  • Explain that 1/10 ÷ 10 = 1/100
  • Place several hundredths on a number line between 0 and 1/10

1 · Read

You already know tenths, so hundredths will feel familiar. If you cut a whole into 100 equal parts instead of 10, each part is called a hundredth. We write it as 1/100.

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Each mark is one hundredth. Count them one by one: 3/100, 4/100, 5/100, all the way to 12/100.
Try it together

Ravi has £1, which is the same as 100 pennies. He spends 8 pennies, so he has spent 8 out of 100 parts of his pound. That is 8/100.

Good to know

Counting hundredths works just like counting whole numbers, only the bottom number stays 100. After 9/100 comes 10/100, then 11/100, and so on, all the way up to 100/100, which is one whole.

Try it together

Cut one tenth into 10 equal pieces. Each new piece is one hundredth of the whole. So one tenth is 10 hundredths, and 1/10 divided by 10 is 1/100.

A hundredth is one part when a whole is split into 100 equal pieces, and you count them one by one just like whole numbers.

2 · Watch

En anglais

Take it off screen

Print a worksheetA4 with an answer key page for grown-ups. No screen, no internet.

Where it sits

Where this leads

Jobs that lean on this skill. Follow one to see everything it is built on.

Then practise

18 questions wait behind this lesson, each with its answer explained. Every answer feeds the sky: stars light as they are learned, and dim when it is time to come back.

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Hundredths (age 8+) · Mathematics, ages 8 to 9 · LightMySky