Grade 2easy
Number Bonds to 20 Practice
Practice number bonds to 20 for second grade. Building on bonds to 10, these facts help with mental math and subtraction strategies.
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All 20 Practice Problems
Every question in this set. Solve them on paper, or use the interactive tool above for instant feedback and hints.
- 1.12 + ? = 20
- 2.15 + ? = 20
- 3.17 + ? = 20
- 4.11 + ? = 20
- 5.14 + ? = 20
- 6.18 + ? = 20
- 7.13 + ? = 20
- 8.16 + ? = 20
- 9.19 + ? = 20
- 10.10 + ? = 20
- 11.20 - 12 = ?
- 12.20 - 15 = ?
- 13.20 - 17 = ?
- 14.20 - 11 = ?
- 15.20 - 14 = ?
- 16.20 - 18 = ?
- 17.20 - 13 = ?
- 18.20 - 16 = ?
- 19.20 - 19 = ?
- 20.20 - 10 = ?
Show answer key
- 1.12 + ? = 20 Answer: 8
- 2.15 + ? = 20 Answer: 5
- 3.17 + ? = 20 Answer: 3
- 4.11 + ? = 20 Answer: 9
- 5.14 + ? = 20 Answer: 6
- 6.18 + ? = 20 Answer: 2
- 7.13 + ? = 20 Answer: 7
- 8.16 + ? = 20 Answer: 4
- 9.19 + ? = 20 Answer: 1
- 10.10 + ? = 20 Answer: 10
- 11.20 - 12 = ? Answer: 8
- 12.20 - 15 = ? Answer: 5
- 13.20 - 17 = ? Answer: 3
- 14.20 - 11 = ? Answer: 9
- 15.20 - 14 = ? Answer: 6
- 16.20 - 18 = ? Answer: 2
- 17.20 - 13 = ? Answer: 7
- 18.20 - 16 = ? Answer: 4
- 19.20 - 19 = ? Answer: 1
- 20.20 - 10 = ? Answer: 10
About This Practice
This practice set includes 20 make-20 problems. Knowing these bonds helps students work with larger numbers mentally.
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