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Explain how an estimate helps you place the decimal point when multiplying 3.9 × 5.3

Explain how an estimate helps you place the decimal point when multiplying 3.9 × 5.3
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Explain how an estimate helps you place the decimal point when multiplying 3.9 × 5.3

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User Steve Emmerson
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so you can round 3.9 to 4, and 5.3 to 5. so 4x5=20. there would then be 2 digits in front of the decimal point. (:
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User Hussien Fahmy
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