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Subtraction Within 20

Name: ______________Date: ________Score: ____
1)
12
− 9
2)
29
− 10
3)
26
− 20
4)
23
− 8
5)
20
− 2
6)
17
− 2
7)
14
− 8
8)
11
− 10
9)
28
− 6
10)
25
− 22
11)
22
− 17
12)
19
− 18
13)
16
− 10
14)
13
− 2
15)
10
− 3

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1st & 2nd Grade

Subtraction Within 20

Subtraction facts to 20 for building fluency.

Grade
1st & 2nd Grade
Common Core
1.OA.C.6
Topic
Subtraction Worksheets
Format
PDF · A4 / Letter
Customize this worksheet →See all in this topic →

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Sample problems

  1. 1.12 − 9
  2. 2.29 − 10
  3. 3.26 − 20
  4. 4.23 − 8
  5. 5.20 − 2
  6. 6.17 − 2
  7. 7.14 − 8
  8. 8.11 − 10
  9. 9.28 − 6
  10. 10.25 − 22
  11. 11.22 − 17
  12. 12.19 − 18
  13. 13.16 − 10
  14. 14.13 − 2
  15. 15.10 − 3
Answer key
  1. 1.3
  2. 2.19
  3. 3.6
  4. 4.15
  5. 5.18
  6. 6.15
  7. 7.6
  8. 8.1
  9. 9.22
  10. 10.3
  11. 11.5
  12. 12.1
  13. 13.6
  14. 14.11
  15. 15.7

About this Subtraction Within 20 worksheet

This subtraction within 20 worksheet is aimed at 1st & 2nd Grade students and is generated by MathPrepAI's algorithmic engine — so you can produce unlimited fresh versions with automatic answer keys. Adjust the number of problems, difficulty, and page layout, then download a print-ready PDF. It aligns with Common Core standard 1.OA.C.6.

Browse more by grade: Grade 1, Grade 2.

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