Friday, 11 December 2015

APPROXIMATIONS 3


Estimate the value of 92 x 71.

solution

round off to tens

92 ≈ 90
71 ≈ 70

 = 90 x 70

 = 6300

Hence 92 x 71 ≈ 6300

TRY THIS...................


Estimate the value of 86 x 41.

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