Answer :

a) The estimated value of 98.5 x 13 is 1280.5.

b) The estimated value of 102.3 / 4.7 is 21.77.

a) To estimate the value of 98.5 × 13:

Estimate= 98.5 × 13 = 1280.5

This is a quick approximation by rounding 98.5 to 100 for simplicity.

b) To estimate the value of 102.3 / 4.7:

Estimate = 100/ 5 =20

This is a quick approximation by rounding 102.3 to 100 and 4.7 to 5 for simplicity.

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