Question

Jill and bill each rounded 2,639,456 to the nearest ten-thousand. Bill got 2,640,000. Jill got 2,630,000. Who is correct? What was the error?

Answer 1

Bill is correct. Jill is incorrect.
Jill's error is that she didn't take into account the 9 in the thousands place, so she didn't round the 3 in the ten-thousands place up to a 4, like Bill did.

Answer 2

Bill is correct

Explanation:

Bill= 2, 639,456

We have to estimate to nearest ten-thousand

Jill estimation=2,630,000.

Bill got= 2,640,000.

When we have to estimate to nearest ten thousand, than we have to find where the thousand value is greater than 5000 or not

The value is 9456 , which is greater than 5000.

Hence, the correct estimation is 2,640,000

Hence , the bill is correct.