Inverse Operations: Check Your Answers (Ex. 2)

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1. Question 1

   Multiple choice

   To check 365 - 142 = 223, which works?

2. Question 2

   Multiple choice

   100 - ___ = 45. What is the missing number?

3. Question 3

   Multiple choice

   134 + ___ = 200.

4. Question 4

   Sequence

   10+20=30, 30-20=10; 15+25=40, 40-25=___.

5. Question 5

   True or false

   Inverse operations can be used to check subtraction answers.

More exercises in this module

• Estimating Sums and Differences (Ex. 2)

• Word Problems: Addition and Subtraction (Ex. 3)

• Mental Addition and Subtraction (Ex. 1)

• Inverse Operations: Check Your Answers (Ex. 3)

• Word Problems: Addition and Subtraction (Ex. 2)

• Estimating Sums and Differences (Ex. 1)