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Counting to 100

Here is a 100 square.

You can use it to count from 1 to 100.

A number grid from 1 to 100.
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Counting up

Let's use the 100 square to help us count.

If it's useful, you can trace your finger along each square as you count up.

  • Can you count from 27 to 35?

  • Can you count from 62 to 76?

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An illustration of a young girl pointing.

Counting back

You can use the 100 square to count back, as well as count up.

  • Can you count back from 44 to 38?

Now look at how the numbers are arranged.

  • Which number is between 34 and 36?

  • Which number is between 55 and 75?

An illustration of a young girl pointing.
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An illustrated boy thinking about a question.

Example 1

Use the 100 square to find the mistake in this sequence.

47, 48, 49, 50, 51, 61, 53, 54, 55

Starting from 47 and counting along the rows you get to 52, not 61.

So 61 is not in the correct sequence.

An illustrated boy thinking about a question.
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A illustrated girl thinking about a question.

Example 2

Now let's use the 100 square to find numbers 10 more or 10 less.

Which number is 10 more than 26?

Find 26 on the 100 square and count 10 more .What do you notice?

26 + 10 = 36

Now find the numbers 40, 51and 76 and count on 10 more.

What do you notice each time? Can you see a pattern?

Did you notice that 10 more is always beneath the number you started with?

A illustrated girl thinking about a question.
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An illustrated boy pointing to top tip bubble.

Top tip

Counting up in tens doesn鈥檛 change the last digit (ones).

For example:

23, 33, 43, 53, 63, 73, 83

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Activity 1

Practise counting up and down in tens by counting up and down the rows.

Trace your finger along the column with the following numbers.

  • 10, 20, 30, 40, 50, 60, 70, 80, 90, 100

  • 7, 17, 27, 37, 47, 57, 67, 77, 87, 97

  • 95, 85, 75, 65, 55, 45, 35, 25, 15, 5

A number grid from 1 to 100.
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A illustrated parrot with a bubble saying 'Remember'.

Remember

To count up in ones, count on along the rows of the 100 square.

To count up in tens, count down the columns of the 100 square.

A illustrated parrot with a bubble saying 'Remember'.
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Activity 2

Now try counting the objects in this quiz.

You can use the number square in activity 1 to help you count.

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More on Counting and ordering

Find out more by working through a topic