Worksheet on Checking Subtraction Using Addition

Here we can use addition to check the answer for the subtraction.

1. Subtract ans check your answer.

(i)

      T     O

      5     4

  -          3_

  ________




Check: 3 + _____ = 54

(ii)

      T     O

      6     8

  -   2     5_

  ________




Check: 25 + _____ = _____

(iii)

      T     O

      9     2

  -   2     9_

  ________




Check: _____ + _____ = _____


Answer:

1. (i) 51;  Check: 3 + 51 = 54

(ii) 43; Check: 25 + 43 = 68

(iii) 63; Check: 2963 = 92


2. Find the difference and check your answer using addition:

Checking Subtraction using Addition

Answer:

2. (i) 76 - 24 = 52; 52 + 24 = 76

(ii) 91 - 50 = 41; 41 + 50 = 91

(iii) 25 - 13 = 12; 12 + 13 = 25

(iv) 83 - 42 = 41; 41 + 42 = 83


3. Fill in the blanks: One has been done for you.

(i)

35 + 5 = 40

40 - 5 = 35

(ii)

60 + 25 = 85

___ _ ___ = ___

(iii)

76 + 4 = 80

___ _ ___ = ___

(iv)

45 + 10 = 55

___ _ ___ = ___

(v)

52 + 8 = 60

___ _ ___ = ___

(vi)

38 + 4 = 42

___ _ ___ = ___


Answer:

3. (ii) 85 - 25 = 60

(iii) 80 - 4 = 76

(iv) 55 - 10 = 45

(v) 60 - 8 = 52

(vi) 42 - 4 = 38

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