Seudónimo Seudónimo

24-01-2017
Mathematics

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

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ash5sos ash5sos

24-01-2017

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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Can anyone help me?! Will give 20 points! Thank you!