Worksheet: Relationship Between Addition and Subtraction within 100

In this worksheet, we will practice using addition to check subtraction and identifying the related addition equation that can be solved to check the answer.

Q1:

Look at the expression 7 6 3 9 .

Choose a strategy and solve the expression.

Hint: You can use the vertical column method.

Check your answer using the inverse operation. Remember that inverse means the opposite.

Which addition expression shows the opposite calculation you need to carry out?

  • A 3 7 + 3 9
  • B 3 7 + 7 6
  • C 3 9 + 7 6

Q2:

Amira and Maged have been asked to solve .

Amira solves it and gets an answer of 51.

Maged solves it and gets an answer of 31.

Who is correct? Use the vertical column method to find out.

  • AAmira
  • BMaged

Check your answer using the inverse operation.

What number do you add to 45 to get 96?

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