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Which of these examples is an error of addition by one?

A. 27,465 +52,534 = 79,899

B. 63,528 + 24,361 = 87,889

C. 51,824 + 48,165 = 99,989

D. 35,246 + 43,732 = 78,978

Respuesta :

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Answer:

The correct answer is:

A. 27,465 +52,534 = 79,899

Step-by-step explanation:

Given are the options for addition

We have to check each addition one by one

So,

A. 27,465 +52,534 = 79,899

This option is the example of error of addition by one. The answer should have been 79,999. Hence there is an error in addition ..

Hence, option a: 27,465 +52,534 = 79,899  is the correct answer ..

Answer:

Option A - 27,465 +52,534 = 79,899

Step-by-step explanation:

To find : Which of these examples is an error of addition by one?

Solution :

We add all the examples,

A) 27,465 +52,534 = 79,899

   2 7 4 6 5

   5 2 5 3 4

+  ---------------

    7 9 9 9 9

There is an error of addition by 1 as 79999-79899=1

B) 63,528 + 24,361 = 87,889

   6 3 5 2 8

   2 4 3 6 1

+  ---------------

    8 7 8 8 9

No error.

C) 51,824 + 48,165 = 99,989

   5 1 8 2 4

   4 8 1 6 5

+  ---------------

   9 9 9 8 9

No error.

D) 35,246 + 43,732 = 78,978

   3 5 2 4 6

   4 3 7 3 2

+  ---------------

    7 8 9 7 8

No error.

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