We can check subtraction by adding the difference to the smaller number. Let us see how.
Example:
Since the sum of difference and smaller number is equal to the larger number, subtraction is correct.
This method also works with sums that need regrouping.
More examples on Check subtraction using addition
Find the difference and check your answers using addition:
1. 82  48
Solution:
Let's try to subtract 48 from 82.

Therefore, the difference is 34.
Now check the subtraction is correct or not.
So, we add add difference (34) and subtrahend (48). If the sum is equal to the minuend (82) then the the subtraction is correct.

Therefore, the sum (82) is equal to the minuend (82).
Thus, we can say that the subtraction is correct!
2. Subtract 24 from 59.
Solution:
Since the sum of difference (35) and smaller number (24) is equal to the larger number (59), subtraction is correct.
1. Questions and Answers on Checking Subtraction using Addition:
(i) 74  59
(ii) 60  25
(iii) 32  19
(iv) 91  20
(v) 81 38
(vi) 64  27
(vii) 72  38
(viii) 96  84
(ix) 45  31
(x) 81  56
Answer:
1. (i) 15
(ii) 35
(iii) 13
(iv) 71
(v) 43
(vi) 37
(vii) 34
(viii) 12
(ix) 14
(x) 25
From Checking Subtraction using Addition to HOME PAGE
Didn't find what you were looking for? Or want to know more information about Math Only Math. Use this Google Search to find what you need.
Oct 10, 24 05:15 PM
Oct 10, 24 10:06 AM
Oct 10, 24 03:19 AM
Oct 09, 24 05:16 PM
Oct 08, 24 10:53 AM
New! Comments
Have your say about what you just read! Leave me a comment in the box below. Ask a Question or Answer a Question.