Grade 1medium
Missing Addend Practice
Practice finding the missing addend in addition equations. This algebraic thinking skill prepares students for equation solving.
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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.
- 1.5 + ? = 12
- 2.8 + ? = 15
- 3.6 + ? = 14
- 4.9 + ? = 17
- 5.7 + ? = 13
- 6.4 + ? = 11
- 7.? + 6 = 13
- 8.? + 8 = 16
- 9.? + 5 = 14
- 10.? + 9 = 18
- 11.3 + ? = 10
- 12.? + 7 = 15
- 13.6 + ? = 11
- 14.? + 4 = 12
- 15.8 + ? = 14
- 16.? + 3 = 11
- 17.5 + ? = 13
- 18.? + 6 = 15
- 19.7 + ? = 16
- 20.? + 8 = 17
Show answer key
- 1.5 + ? = 12 Answer: 7
- 2.8 + ? = 15 Answer: 7
- 3.6 + ? = 14 Answer: 8
- 4.9 + ? = 17 Answer: 8
- 5.7 + ? = 13 Answer: 6
- 6.4 + ? = 11 Answer: 7
- 7.? + 6 = 13 Answer: 7
- 8.? + 8 = 16 Answer: 8
- 9.? + 5 = 14 Answer: 9
- 10.? + 9 = 18 Answer: 9
- 11.3 + ? = 10 Answer: 7
- 12.? + 7 = 15 Answer: 8
- 13.6 + ? = 11 Answer: 5
- 14.? + 4 = 12 Answer: 8
- 15.8 + ? = 14 Answer: 6
- 16.? + 3 = 11 Answer: 8
- 17.5 + ? = 13 Answer: 8
- 18.? + 6 = 15 Answer: 9
- 19.7 + ? = 16 Answer: 9
- 20.? + 8 = 17 Answer: 9
About This Practice
These 20 problems develop understanding of equality and the relationship between addition and subtraction.
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