Fact Family Add Sub Within 20 Fill Blanks — Set 25
Write the fact family for 9, 4, 13:
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Answer: 9 + 4 = 13; 4 + 9 = 13; 13 - 9 = 4; 13 - 4 = 9
- SubType
- fact-family
- Facts
- 9 + 4 = 13
- 4 + 9 = 13
- 13 - 9 = 4
- 13 - 4 = 9
- Difficulty
- normal
Write the fact family for 8, 9, 17:
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Answer: 8 + 9 = 17; 9 + 8 = 17; 17 - 8 = 9; 17 - 9 = 8
- SubType
- fact-family
- Facts
- 8 + 9 = 17
- 9 + 8 = 17
- 17 - 8 = 9
- 17 - 9 = 8
- Difficulty
- normal
Write the fact family for 9, 3, 12:
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Answer: 9 + 3 = 12; 3 + 9 = 12; 12 - 9 = 3; 12 - 3 = 9
- SubType
- fact-family
- Facts
- 9 + 3 = 12
- 3 + 9 = 12
- 12 - 9 = 3
- 12 - 3 = 9
- 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 13, 4, 17:
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Answer: 13 + 4 = 17; 4 + 13 = 17; 17 - 13 = 4; 17 - 4 = 13
- SubType
- fact-family
- Facts
- 13 + 4 = 17
- 4 + 13 = 17
- 17 - 13 = 4
- 17 - 4 = 13
- Difficulty
- normal
Write the fact family for 15, 4, 19:
Show answer
Answer: 15 + 4 = 19; 4 + 15 = 19; 19 - 15 = 4; 19 - 4 = 15
- SubType
- fact-family
- Facts
- 15 + 4 = 19
- 4 + 15 = 19
- 19 - 15 = 4
- 19 - 4 = 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?
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.