Fact Family Add Sub Within 20 Fill Blanks — Set 30
Write the fact family for 10, 4, 14:
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Answer: 10 + 4 = 14; 4 + 10 = 14; 14 - 10 = 4; 14 - 4 = 10
- SubType
- fact-family
- Facts
- 10 + 4 = 14
- 4 + 10 = 14
- 14 - 10 = 4
- 14 - 4 = 10
- Difficulty
- normal
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 7, 6, 13:
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Answer: 7 + 6 = 13; 6 + 7 = 13; 13 - 7 = 6; 13 - 6 = 7
- SubType
- fact-family
- Facts
- 7 + 6 = 13
- 6 + 7 = 13
- 13 - 7 = 6
- 13 - 6 = 7
- 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 5, 11, 16:
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Answer: 5 + 11 = 16; 11 + 5 = 16; 16 - 5 = 11; 16 - 11 = 5
- SubType
- fact-family
- Facts
- 5 + 11 = 16
- 11 + 5 = 16
- 16 - 5 = 11
- 16 - 11 = 5
- Difficulty
- normal
Write the fact family for 11, 8, 19:
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Answer: 11 + 8 = 19; 8 + 11 = 19; 19 - 11 = 8; 19 - 8 = 11
- SubType
- fact-family
- Facts
- 11 + 8 = 19
- 8 + 11 = 19
- 19 - 11 = 8
- 19 - 8 = 11
- 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.