Fact Family Add Sub Within 20 Fill Blanks — Set 99
Write the fact family for 14, 5, 19:
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Answer: 14 + 5 = 19; 5 + 14 = 19; 19 - 14 = 5; 19 - 5 = 14
- SubType
- fact-family
- Facts
- 14 + 5 = 19
- 5 + 14 = 19
- 19 - 14 = 5
- 19 - 5 = 14
- 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 8, 5, 13:
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Answer: 8 + 5 = 13; 5 + 8 = 13; 13 - 8 = 5; 13 - 5 = 8
- SubType
- fact-family
- Facts
- 8 + 5 = 13
- 5 + 8 = 13
- 13 - 8 = 5
- 13 - 5 = 8
- Difficulty
- normal
Write the fact family for 10, 7, 17:
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Answer: 10 + 7 = 17; 7 + 10 = 17; 17 - 10 = 7; 17 - 7 = 10
- SubType
- fact-family
- Facts
- 10 + 7 = 17
- 7 + 10 = 17
- 17 - 10 = 7
- 17 - 7 = 10
- Difficulty
- normal
Write the fact family for 16, 4, 20:
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Answer: 16 + 4 = 20; 4 + 16 = 20; 20 - 16 = 4; 20 - 4 = 16
- SubType
- fact-family
- Facts
- 16 + 4 = 20
- 4 + 16 = 20
- 20 - 16 = 4
- 20 - 4 = 16
- Difficulty
- normal
Write the fact family for 14, 3, 17:
Show answer
Answer: 14 + 3 = 17; 3 + 14 = 17; 17 - 14 = 3; 17 - 3 = 14
- SubType
- fact-family
- Facts
- 14 + 3 = 17
- 3 + 14 = 17
- 17 - 14 = 3
- 17 - 3 = 14
- 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.