Fact Family Add Sub Within 20 Fill Blanks — Set 42
Write the fact family for 3, 4, 7:
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Answer: 3 + 4 = 7; 4 + 3 = 7; 7 - 3 = 4; 7 - 4 = 3
- SubType
- fact-family
- Facts
- 3 + 4 = 7
- 4 + 3 = 7
- 7 - 3 = 4
- 7 - 4 = 3
- Difficulty
- normal
Write the fact family for 15, 5, 20:
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Answer: 15 + 5 = 20; 5 + 15 = 20; 20 - 15 = 5; 20 - 5 = 15
- SubType
- fact-family
- Facts
- 15 + 5 = 20
- 5 + 15 = 20
- 20 - 15 = 5
- 20 - 5 = 15
- Difficulty
- normal
Write the fact family for 13, 7, 20:
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Answer: 13 + 7 = 20; 7 + 13 = 20; 20 - 13 = 7; 20 - 7 = 13
- SubType
- fact-family
- Facts
- 13 + 7 = 20
- 7 + 13 = 20
- 20 - 13 = 7
- 20 - 7 = 13
- Difficulty
- normal
Write the fact family for 1, 10, 11:
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Answer: 1 + 10 = 11; 10 + 1 = 11; 11 - 1 = 10; 11 - 10 = 1
- SubType
- fact-family
- Facts
- 1 + 10 = 11
- 10 + 1 = 11
- 11 - 1 = 10
- 11 - 10 = 1
- Difficulty
- normal
Write the fact family for 8, 1, 9:
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Answer: 8 + 1 = 9; 1 + 8 = 9; 9 - 8 = 1; 9 - 1 = 8
- SubType
- fact-family
- Facts
- 8 + 1 = 9
- 1 + 8 = 9
- 9 - 8 = 1
- 9 - 1 = 8
- Difficulty
- normal
Write the fact family for 15, 1, 16:
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Answer: 15 + 1 = 16; 1 + 15 = 16; 16 - 15 = 1; 16 - 1 = 15
- SubType
- fact-family
- Facts
- 15 + 1 = 16
- 1 + 15 = 16
- 16 - 15 = 1
- 16 - 1 = 15
- 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?
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Is there an answer key?
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