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

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
User Bladebunny
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