Subtraction Within 20 Quiz

Grade 1 · Math · Quiz

Test your subtraction skills with 10 questions on subtracting numbers within 20.

Questions

1. What is 11 - 4?

   1. 6
   2. 7
   3. 8
   4. 5
   Show answer

   Answer: 7

   11 - 4 = 7; count back 4 from 11

2. 17 - 9 = ___

   Show answer

   Answer: 8

   17 - 9 = 8; use fact family: 9 + 8 = 17

3. 20 - 0 = 20

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   Answer: True

   Subtracting zero leaves the number unchanged

4. Lily had 15 stickers. She gave away 6. How many does she have left?

   1. 8
   2. 10
   3. 9
   4. 7
   Show answer

   Answer: 9

   15 - 6 = 9

5. 12 - 5 = 8

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   Answer: False

   12 - 5 = 7, not 8

6. Which subtraction fact belongs in the fact family with 7 + 9 = 16?

   1. 16 - 8 = 8
   2. 16 - 9 = 7
   3. 16 - 6 = 10
   4. 15 - 7 = 8
   Show answer

   Answer: 16 - 9 = 7

   7, 9, and 16 form a fact family; 16 - 9 = 7 is correct

7. 13 - ___ = 6

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   Answer: 7

   13 - 7 = 6; think 6 + 7 = 13

8. What is 18 - 9?

   1. 8
   2. 10
   3. 9
   4. 7
   Show answer

   Answer: 9

   18 - 9 = 9; doubles subtraction fact

9. 5 - 5 = 1

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   Answer: False

   5 - 5 = 0, not 1

10. Tom scored 14 points. He lost 7. How many points does he have?

    1. 6
    2. 7
    3. 8
    4. 9
    Show answer

    Answer: 7

    14 - 7 = 7; doubles subtraction fact

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