Fact Family Add Sub Within 20 Write All — Set 91
Write the fact family for 16, 1, 17:
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Answer: 16 + 1 = 17; 1 + 16 = 17; 17 - 16 = 1; 17 - 1 = 16
- SubType
- fact-family
- Facts
- 16 + 1 = 17
- 1 + 16 = 17
- 17 - 16 = 1
- 17 - 1 = 16
- Difficulty
- normal
Write the fact family for 1, 13, 14:
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Answer: 1 + 13 = 14; 13 + 1 = 14; 14 - 1 = 13; 14 - 13 = 1
- SubType
- fact-family
- Facts
- 1 + 13 = 14
- 13 + 1 = 14
- 14 - 1 = 13
- 14 - 13 = 1
- Difficulty
- normal
Write the fact family for 7, 6, 13:
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Answer: 7 + 6 = 13; 6 + 7 = 13; 13 - 7 = 6; 13 - 6 = 7
- SubType
- fact-family
- Facts
- 7 + 6 = 13
- 6 + 7 = 13
- 13 - 7 = 6
- 13 - 6 = 7
- Difficulty
- normal
Write the fact family for 4, 4, 8:
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Answer: 4 + 4 = 8; 4 + 4 = 8; 8 - 4 = 4; 8 - 4 = 4
- SubType
- fact-family
- Facts
- 4 + 4 = 8
- 4 + 4 = 8
- 8 - 4 = 4
- 8 - 4 = 4
- Difficulty
- normal
Write the fact family for 19, 1, 20:
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Answer: 19 + 1 = 20; 1 + 19 = 20; 20 - 19 = 1; 20 - 1 = 19
- SubType
- fact-family
- Facts
- 19 + 1 = 20
- 1 + 19 = 20
- 20 - 19 = 1
- 20 - 1 = 19
- Difficulty
- normal
Write the fact family for 7, 10, 17:
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Answer: 7 + 10 = 17; 10 + 7 = 17; 17 - 7 = 10; 17 - 10 = 7
- SubType
- fact-family
- Facts
- 7 + 10 = 17
- 10 + 7 = 17
- 17 - 7 = 10
- 17 - 10 = 7
- 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.
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Yes — every worksheet includes a complete answer key. Print it separately or view it on screen.