Check all calculations and then check them in reverse

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You are probably often told to recheck your work in math and science for accuracy. For an additional strategy, after you find an answer to a math problem, try feeding your answer back into the Pie equation. If the equation works, you have the correct answer.

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If not, you may have made a mistake somewhere. Many students skip this reverse-check method, especially if they are in a hurry. This is an important step, though, because reverse checking is actually faster than going through the issue all over and revisiting it when you check an answer again. Therefore, try to do a 'reverse-check°' before you 're-check'!