Fact Family Add Sub Within 20 Write All — Set 90
Write the fact family for 5, 12, 17:
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Answer: 5 + 12 = 17; 12 + 5 = 17; 17 - 5 = 12; 17 - 12 = 5
- SubType
- fact-family
- Facts
- 5 + 12 = 17
- 12 + 5 = 17
- 17 - 5 = 12
- 17 - 12 = 5
- Difficulty
- normal
Write the fact family for 6, 9, 15:
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Answer: 6 + 9 = 15; 9 + 6 = 15; 15 - 6 = 9; 15 - 9 = 6
- SubType
- fact-family
- Facts
- 6 + 9 = 15
- 9 + 6 = 15
- 15 - 6 = 9
- 15 - 9 = 6
- Difficulty
- normal
Write the fact family for 10, 2, 12:
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Answer: 10 + 2 = 12; 2 + 10 = 12; 12 - 10 = 2; 12 - 2 = 10
- SubType
- fact-family
- Facts
- 10 + 2 = 12
- 2 + 10 = 12
- 12 - 10 = 2
- 12 - 2 = 10
- Difficulty
- normal
Write the fact family for 2, 8, 10:
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Answer: 2 + 8 = 10; 8 + 2 = 10; 10 - 2 = 8; 10 - 8 = 2
- SubType
- fact-family
- Facts
- 2 + 8 = 10
- 8 + 2 = 10
- 10 - 2 = 8
- 10 - 8 = 2
- Difficulty
- normal
Write the fact family for 14, 5, 19:
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Answer: 14 + 5 = 19; 5 + 14 = 19; 19 - 14 = 5; 19 - 5 = 14
- SubType
- fact-family
- Facts
- 14 + 5 = 19
- 5 + 14 = 19
- 19 - 14 = 5
- 19 - 5 = 14
- Difficulty
- normal
Write the fact family for 9, 5, 14:
Show answer
Answer: 9 + 5 = 14; 5 + 9 = 14; 14 - 9 = 5; 14 - 5 = 9
- SubType
- fact-family
- Facts
- 9 + 5 = 14
- 5 + 9 = 14
- 14 - 9 = 5
- 14 - 5 = 9
- Difficulty
- normal
Teaching Notes
Download this free fact family add sub within 20 write all math worksheet. Uniquely generated with an answer key — great for homework, practice, or assessment.
Frequently Asked Questions
How do I use this Fact Family Add Sub Within 20 Write All Math Worksheet worksheet?
Print the worksheet and complete the problems. Each set number generates a unique arrangement. Use the same set number for all students in a class for consistent assessment.
Is there an answer key?
Yes — every worksheet includes a complete answer key. Print it separately or view it on screen.