Explain how estimation helps you place the decimal point when multiplying 3.9 &5.3

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asked Sep 14, 2018 150k views

1 Answer

Klanto Aguntuk · Answer 1 · 2018-09-19T20:42:22+0000

3.9 and 5.3, when rounded off and mult. together, produce the product 20.
Thus, the decimal point must follow the first two digits of your answer, whether estimate or "exact."

3.9*5.3 = 20.67 by calculator.

Explain how estimation helps you place the decimal point when multiplying 3.9 &5.3

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