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Tips to help you impress people doing hard maths in your head

Do you struggle to multiply big numbers together? Do you get fazed by questions involving sizes and quantities? Rob Eastaway gives some tips on how to manage big or complicated numbers when you are stuck without the need of the internet or a calculator to help you. Tim Harford presents.

First broadcast on More or Less, 8 September 2019.

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Duration:

6 minutes

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