Fact Family Add Sub Within 20 Fill Blanks — Set 71
Write the fact family for 1, 5, 6:
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Answer: 1 + 5 = 6; 5 + 1 = 6; 6 - 1 = 5; 6 - 5 = 1
- SubType
- fact-family
- Facts
- 1 + 5 = 6
- 5 + 1 = 6
- 6 - 1 = 5
- 6 - 5 = 1
- 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 6, 10, 16:
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Answer: 6 + 10 = 16; 10 + 6 = 16; 16 - 6 = 10; 16 - 10 = 6
- SubType
- fact-family
- Facts
- 6 + 10 = 16
- 10 + 6 = 16
- 16 - 6 = 10
- 16 - 10 = 6
- 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 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 10, 6, 16:
Show answer
Answer: 10 + 6 = 16; 6 + 10 = 16; 16 - 10 = 6; 16 - 6 = 10
- SubType
- fact-family
- Facts
- 10 + 6 = 16
- 6 + 10 = 16
- 16 - 10 = 6
- 16 - 6 = 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.