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Grade 1 · Math · On Level

Free Subtraction Within 20 worksheet - version 11

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-10S14HH-IB6W

Free printable
1.7 - 5 =
2.1 - 0 =
3.9 - 2 =
4.6 - 2 =
5.7 - 1 =
6.12 - 3 =
7.3 - 1 =
8.14 - 1 =
9.20 - 2 =
10.14 - 8 =
11.14 - 3 =
12.5 - 1 =
13.16 - 9 =
14.5 - 0 =
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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 11
  1. 7 - 5 =2
  2. 1 - 0 =1
  3. 9 - 2 =7
  4. 6 - 2 =4
  5. 7 - 1 =6
  6. 12 - 3 =9
  7. 3 - 1 =2
  8. 14 - 1 =13
  9. 20 - 2 =18
  10. 14 - 8 =6
  11. 14 - 3 =11
  12. 5 - 1 =4
  13. 16 - 9 =7
  14. 5 - 0 =5

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.