Use Addition to Check Subtraction - Grade 1

1. If 5 - 3 = 2, what addition problem can you use to check your answer?

• 4 + 1 = 6

• 2 + 3 = 5

• 6 + 2 = 8

• 2 + 3 = 5

2. What addition problem can you use to check if 7 - 4 = 3?

• 3 + 4 = 7

• 3 + 2 = 5

• 6 + 1 = 7

• 7 + 4 = 11

3. If 8 - 2 = 6, what addition problem can you use to make sure your answer is correct?

• 4 + 4 = 8

• 6 + 2 = 8

• 6 + 4 = 10

• 3 + 2 = 5

4. What addition problem can you use to check if 6 - 1 = 5?

• 4 + 3 = 7

• 5 + 2 = 7

• 5 + 1 = 6

• 6 + 1 = 7

5. If 9 - 5 = 4, what addition problem can you use to verify your answer?

• 3 + 5 = 8

• 7 + 2 = 9

• 6 + 3 = 9

• 4 + 5 = 9

6. What addition problem can you use to check if 4 - 2 = 2?

• 3 + 1 = 4

• 2 + 2 = 4

• 5 - 2 = 3

• 6 - 3 = 3

7. If 10 - 7 = 3, what addition problem can you use to double-check your answer?

• 8 + 2 = 10

• 3 + 7 = 10

• 5 + 5 = 10

• 6 + 4 = 10

8. What addition problem can you use to check if 3 - 1 = 2?

• 2 + 1 = 3

• 3 + 1 = 4

• 4 - 1 = 3

• 5 - 2 = 3

9. If 6 - 4 = 2, what addition problem can you use to ensure your answer is right?

• 5 + 1 = 6

• 2 + 4 = 6

• 8 + 2 = 10

• 3 + 3 = 6

10. What addition problem can you use to check if 8 - 5 = 3?

• 6 - 2 = 4

• 3 + 2 = 5

• 3 + 5 = 8

• 7 + 3 = 10