Fact Family Add Sub Within 20 Fill Blanks — Set 35
Write the fact family for 5, 13, 18:
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Answer: 5 + 13 = 18; 13 + 5 = 18; 18 - 5 = 13; 18 - 13 = 5
- SubType
- fact-family
- Facts
- 5 + 13 = 18
- 13 + 5 = 18
- 18 - 5 = 13
- 18 - 13 = 5
- Difficulty
- normal
Write the fact family for 4, 9, 13:
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Answer: 4 + 9 = 13; 9 + 4 = 13; 13 - 4 = 9; 13 - 9 = 4
- SubType
- fact-family
- Facts
- 4 + 9 = 13
- 9 + 4 = 13
- 13 - 4 = 9
- 13 - 9 = 4
- Difficulty
- normal
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 13, 3, 16:
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Answer: 13 + 3 = 16; 3 + 13 = 16; 16 - 13 = 3; 16 - 3 = 13
- SubType
- fact-family
- Facts
- 13 + 3 = 16
- 3 + 13 = 16
- 16 - 13 = 3
- 16 - 3 = 13
- Difficulty
- normal
Write the fact family for 19, 1, 20:
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Answer: 19 + 1 = 20; 1 + 19 = 20; 20 - 19 = 1; 20 - 1 = 19
- SubType
- fact-family
- Facts
- 19 + 1 = 20
- 1 + 19 = 20
- 20 - 19 = 1
- 20 - 1 = 19
- Difficulty
- normal
Write the fact family for 3, 11, 14:
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Answer: 3 + 11 = 14; 11 + 3 = 14; 14 - 3 = 11; 14 - 11 = 3
- SubType
- fact-family
- Facts
- 3 + 11 = 14
- 11 + 3 = 14
- 14 - 3 = 11
- 14 - 11 = 3
- 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.