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Mathematics, 01.02.2021 16:20 jakeevyhayov21py

A) Jack works out 25 x 14.2 without a calculator. Here is his working. 10 x 14.2 = 14.20

20 x 14.2 = 28.40

5 x 14.2 = 71

25 x 14.2 = 28.40 + 71 = 99.40

Jack's working is incorrect.

Identify and (only) correct the lines containing a mistake to work out

the correct answer.

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A) Jack works out 25 x 14.2 without a calculator. Here is his working. 10 x 14.2 = 14.20

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