Fact Family Add Sub Within 20 Write All — Set 50
Write the fact family for 7, 5, 12:
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Answer: 7 + 5 = 12; 5 + 7 = 12; 12 - 7 = 5; 12 - 5 = 7
- SubType
- fact-family
- Facts
- 7 + 5 = 12
- 5 + 7 = 12
- 12 - 7 = 5
- 12 - 5 = 7
- Difficulty
- normal
Write the fact family for 18, 1, 19:
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Answer: 18 + 1 = 19; 1 + 18 = 19; 19 - 18 = 1; 19 - 1 = 18
- SubType
- fact-family
- Facts
- 18 + 1 = 19
- 1 + 18 = 19
- 19 - 18 = 1
- 19 - 1 = 18
- Difficulty
- normal
Write the fact family for 7, 13, 20:
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Answer: 7 + 13 = 20; 13 + 7 = 20; 20 - 7 = 13; 20 - 13 = 7
- SubType
- fact-family
- Facts
- 7 + 13 = 20
- 13 + 7 = 20
- 20 - 7 = 13
- 20 - 13 = 7
- Difficulty
- normal
Write the fact family for 7, 9, 16:
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Answer: 7 + 9 = 16; 9 + 7 = 16; 16 - 7 = 9; 16 - 9 = 7
- SubType
- fact-family
- Facts
- 7 + 9 = 16
- 9 + 7 = 16
- 16 - 7 = 9
- 16 - 9 = 7
- 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 5, 10, 15:
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Answer: 5 + 10 = 15; 10 + 5 = 15; 15 - 5 = 10; 15 - 10 = 5
- SubType
- fact-family
- Facts
- 5 + 10 = 15
- 10 + 5 = 15
- 15 - 5 = 10
- 15 - 10 = 5
- 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.