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Explain how an estimate help you to place the decimal point when multiplying 3.9x5.3?

Explain how an estimate help you to place the decimal point when multiplying 3.9x5.3?
asked 19.0k views
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Explain how an estimate help you to place the decimal point when multiplying 3.9x5.3?

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User Steve Rosenberg
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you can estimate 3.9 times 5.3 to 4 times 5 which is 20
so if the answer is around 20, you know that you will have exactly 2 digits before the decimal place
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User Bladebunny
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