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# Math tips? Help!????

Lets say 84/2.68.... Would be 31.343284....How can I calculate that with paper n mind (aka without calculator) quickly and accurately?

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- Anonymous9 years ago
You divide both numerator and denominator by 4 you get 21/0.67 if you multiply both numerator and denominator by 100 you get 2100/67, in this form it is lot easier to do.

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