Question

Jill added 450+790+123 and 1163 .is this sum reasonable? Explain.

Answer 1

The sum given is not reasonable.

Explanation:

Given : Jill added 450+790+123 and 1163.

To find : Is this sum reasonable? Explain.

Solution :

To find the correct result we have to add them step by step,

4 5 0

7 9 0

+1 2 3

-----------

13 6 3

So,
`450+790+123=1363`

The sum given is not reasonable.

Therefore, The given sum is not correct.

Answer 2

Let us manually add the given numbers.

450

790

123

____

1363

Therefore we see that the correct answer 1363 which is far from what Jill got which is only 1163.

Therefore the answer is No, the sum should be 1363 (closer to 1400).