Question

estimate the sum to nearest ten 96 + 47​

Answer 1

Nearest ten of 96 = 100 because 6 is five or greater and we have to move 1 ten ahead of 90, that is 100.

Nearest ten of 47 = 150 because 7 is five or greater and we have to move 1 ten ahead of 40, that is 50.

Estimated sum = 100 + 50 = 150

But when we add and then estimate, we get 96 + 47 = 143 rounded to nearest tens = 140

The second method in hence, wrong. '150' will be your answer.

Answer 2

$\sf \: Estimate \: the \: sum \: to \: nearest \: ten\\ \sf 96 + 47$

$\\ \\ \sf \: 96 + 47 = 100 + 50 \\ \\ \sf \: 96 + 47 = \red{ 150}$