Question

Which of the following examples is an error of addition by one? A. 7363 + 1535 = 8798 B. 3415 + 2174 = 5589 C. 5167 + 4622 = 9789 D. 2683 + 6215 = 8898

Answer 1

A

Explanation:

7363 +1535 =8998

Answer 2

(A) and (B)

Explanation:

(A) The given example is:

`7363 + 1535`

Adding these two numbers, we get

`8898`

which is an error of addition by one.

Thus, this option is correct.

(B)The given example is:

`3415 + 2174`

Adding these two numbers, we get

`6589`

which is an error of addition by one.

Thus, this option is correct.

(C)The given example is:

`5167+4622`

Adding these two numbers, we get

`9789`

which is not an error of addition by one.

Thus, this option is not correct.

(D) The given example is:

`2683+6215`

Adding these two numbers, we get

`8898`

which is not an error of addition by one.

Thus, this option is not correct.