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# Napier's Bones

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Age 7 to 11

Challenge Level

The Scot, John Napier, invented these strips (originally made from bone) about 400 years ago to help calculate multiplication and division.

This is what they looked like:

Can you work out how to use Napier's bones to find the answer to
**24 x 6**?

How about **461 x 4**?

Now try **8931 x 6**.

Can you work out how you would use them to calculate the product
of **3541 and 768**?