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### Number and algebra

### Geometry and measure

### Probability and statistics

### Working mathematically

### For younger learners

### Advanced mathematics

# How Many?

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### Month Mania

### Writing Digits

Links to the University of Cambridge website
Links to the NRICH website Home page

Nurturing young mathematicians: teacher webinars

30 April (Primary), 1 May (Secondary)

30 April (Primary), 1 May (Secondary)

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Age 5 to 11

Challenge Level

Have a look at this photo of some peaches:

How many?

How did you count them?

Now take a look at this picture of oranges:

How many?

How did you count them?

And one last photo:

How many this time?

How did you count?

*This task was inspired by Christopher Danielson's tweets. You might like to take a look at Christopher's X (Twitter) account.*

*You may be interested in the other problems in our Low Threshold High Ceiling Feature.*

Can you design a new shape for the twenty-eight squares and arrange the numbers in a logical way? What patterns do you notice?

Lee was writing all the counting numbers from 1 to 20. She stopped for a rest after writing seventeen digits. What was the last number she wrote?