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Question from Jason:

Hi!
Is there a method to approximately convert inches to cm in my head without using a calculator?

Thanks!
Jason

HI Jason,

There are 2.54 centimeters in an inch which is approximately two and a half centimeters in an inch. Four times two and a half is ten and hence there are approximately ten centimeters in 4 inches. That's what I use approximately convert inches to centimeters

\[4 \mbox{ inches } \approx 10 \mbox{ centimeters.}\]

Penny

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