Fact Family Mixed Within 20 Fill Blanks — Set 86
Write the fact family for 5, 8, 13:
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Answer: 5 + 8 = 13; 8 + 5 = 13; 13 - 5 = 8; 13 - 8 = 5
- SubType
- fact-family
- Facts
- 5 + 8 = 13
- 8 + 5 = 13
- 13 - 5 = 8
- 13 - 8 = 5
- Difficulty
- normal
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 5, 7, 12:
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Answer: 5 + 7 = 12; 7 + 5 = 12; 12 - 5 = 7; 12 - 7 = 5
- SubType
- fact-family
- Facts
- 5 + 7 = 12
- 7 + 5 = 12
- 12 - 5 = 7
- 12 - 7 = 5
- Difficulty
- normal
Write the fact family for 14, 4, 18:
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Answer: 14 + 4 = 18; 4 + 14 = 18; 18 - 14 = 4; 18 - 4 = 14
- SubType
- fact-family
- Facts
- 14 + 4 = 18
- 4 + 14 = 18
- 18 - 14 = 4
- 18 - 4 = 14
- Difficulty
- normal
Write the fact family for 15, 3, 18:
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Answer: 15 + 3 = 18; 3 + 15 = 18; 18 - 15 = 3; 18 - 3 = 15
- SubType
- fact-family
- Facts
- 15 + 3 = 18
- 3 + 15 = 18
- 18 - 15 = 3
- 18 - 3 = 15
- 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
Teaching Notes
Download this free fact family mixed 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 Mixed 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.