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Grade 1 · Math · On Level

Free Subtraction Within 20 worksheet - version 12

Build subtraction fluency with numbers through 20. This printable version includes 14 grade-appropriate questions and a separate answer sheet.

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Subtraction Within 20

Grade 1 · On-level practice · 14 questions · Version PG-ZY2BEK-IB6W

Free printable
1.13 - 5 =
2.19 - 6 =
3.9 - 5 =
4.3 - 3 =
5.17 - 12 =
6.5 - 3 =
7.4 - 4 =
8.1 - 0 =
9.14 - 12 =
10.14 - 3 =
11.8 - 4 =
12.7 - 5 =
13.12 - 4 =
14.18 - 9 =
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Answers and teaching notes

Use the answers to check the work after the learner finishes. For writing prompts, the guide describes what a strong response should include.

Show answers for version 12
  1. 13 - 5 =8
  2. 19 - 6 =13
  3. 9 - 5 =4
  4. 3 - 3 =0
  5. 17 - 12 =5
  6. 5 - 3 =2
  7. 4 - 4 =0
  8. 1 - 0 =1
  9. 14 - 12 =2
  10. 14 - 3 =11
  11. 8 - 4 =4
  12. 7 - 5 =2
  13. 12 - 4 =8
  14. 18 - 9 =9

Worked example

16 - 7 = 9. Break 7 into 6 and 1: 16 - 6 - 1 = 9.

Common mistake

Switching the order of the numbers because subtraction is not commutative.

Helpful hint

Count back to 10, then subtract what remains.