Fact Family Add Sub Within 20 Fill Blanks — Set 14
Write the fact family for 16, 2, 18:
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Answer: 16 + 2 = 18; 2 + 16 = 18; 18 - 16 = 2; 18 - 2 = 16
- SubType
- fact-family
- Facts
- 16 + 2 = 18
- 2 + 16 = 18
- 18 - 16 = 2
- 18 - 2 = 16
- Difficulty
- normal
Write the fact family for 9, 5, 14:
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Answer: 9 + 5 = 14; 5 + 9 = 14; 14 - 9 = 5; 14 - 5 = 9
- SubType
- fact-family
- Facts
- 9 + 5 = 14
- 5 + 9 = 14
- 14 - 9 = 5
- 14 - 5 = 9
- Difficulty
- normal
Write the fact family for 3, 5, 8:
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Answer: 3 + 5 = 8; 5 + 3 = 8; 8 - 3 = 5; 8 - 5 = 3
- SubType
- fact-family
- Facts
- 3 + 5 = 8
- 5 + 3 = 8
- 8 - 3 = 5
- 8 - 5 = 3
- Difficulty
- normal
Write the fact family for 5, 10, 15:
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Answer: 5 + 10 = 15; 10 + 5 = 15; 15 - 5 = 10; 15 - 10 = 5
- SubType
- fact-family
- Facts
- 5 + 10 = 15
- 10 + 5 = 15
- 15 - 5 = 10
- 15 - 10 = 5
- Difficulty
- normal
Write the fact family for 6, 9, 15:
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Answer: 6 + 9 = 15; 9 + 6 = 15; 15 - 6 = 9; 15 - 9 = 6
- SubType
- fact-family
- Facts
- 6 + 9 = 15
- 9 + 6 = 15
- 15 - 6 = 9
- 15 - 9 = 6
- Difficulty
- normal
Write the fact family for 10, 9, 19:
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Answer: 10 + 9 = 19; 9 + 10 = 19; 19 - 10 = 9; 19 - 9 = 10
- SubType
- fact-family
- Facts
- 10 + 9 = 19
- 9 + 10 = 19
- 19 - 10 = 9
- 19 - 9 = 10
- 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.