Fact Family Add Sub Within 20 Fill Blanks — Set 68
Write the fact family for 7, 11, 18:
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Answer: 7 + 11 = 18; 11 + 7 = 18; 18 - 7 = 11; 18 - 11 = 7
- SubType
- fact-family
- Facts
- 7 + 11 = 18
- 11 + 7 = 18
- 18 - 7 = 11
- 18 - 11 = 7
- Difficulty
- normal
Write the fact family for 6, 10, 16:
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Answer: 6 + 10 = 16; 10 + 6 = 16; 16 - 6 = 10; 16 - 10 = 6
- SubType
- fact-family
- Facts
- 6 + 10 = 16
- 10 + 6 = 16
- 16 - 6 = 10
- 16 - 10 = 6
- Difficulty
- normal
Write the fact family for 4, 10, 14:
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Answer: 4 + 10 = 14; 10 + 4 = 14; 14 - 4 = 10; 14 - 10 = 4
- SubType
- fact-family
- Facts
- 4 + 10 = 14
- 10 + 4 = 14
- 14 - 4 = 10
- 14 - 10 = 4
- Difficulty
- normal
Write the fact family for 7, 2, 9:
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Answer: 7 + 2 = 9; 2 + 7 = 9; 9 - 7 = 2; 9 - 2 = 7
- SubType
- fact-family
- Facts
- 7 + 2 = 9
- 2 + 7 = 9
- 9 - 7 = 2
- 9 - 2 = 7
- Difficulty
- normal
Write the fact family for 17, 3, 20:
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Answer: 17 + 3 = 20; 3 + 17 = 20; 20 - 17 = 3; 20 - 3 = 17
- SubType
- fact-family
- Facts
- 17 + 3 = 20
- 3 + 17 = 20
- 20 - 17 = 3
- 20 - 3 = 17
- Difficulty
- normal
Write the fact family for 17, 1, 18:
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Answer: 17 + 1 = 18; 1 + 17 = 18; 18 - 17 = 1; 18 - 1 = 17
- SubType
- fact-family
- Facts
- 17 + 1 = 18
- 1 + 17 = 18
- 18 - 17 = 1
- 18 - 1 = 17
- Difficulty
- normal
Teaching Notes
Download this free fact family add sub within 20 fill blanks 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 Fill Blanks 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.