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### Number and algebra

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### Working mathematically

### For younger learners

### Advanced mathematics

# Can You Make 100?

How close can you get with just adding?

Which sorts of calculations make the most difference?

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### Squaring the Circle

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Age 11 to 14

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- Getting Started
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How close can you get with just adding?

Which sorts of calculations make the most difference?

Bluey-green, white and transparent squares with a few odd bits of shapes around the perimeter. But, how many squares are there of each type in the complete circle? Study the picture and make an estimate.