Fact Family Add Sub Within 20 Write All — Set 30
Write the fact family for 19, 1, 20:
Show answer
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 12, 1, 13:
Show answer
Answer: 12 + 1 = 13; 1 + 12 = 13; 13 - 12 = 1; 13 - 1 = 12
- SubType
- fact-family
- Facts
- 12 + 1 = 13
- 1 + 12 = 13
- 13 - 12 = 1
- 13 - 1 = 12
- Difficulty
- normal
Write the fact family for 6, 6, 12:
Show answer
Answer: 6 + 6 = 12; 6 + 6 = 12; 12 - 6 = 6; 12 - 6 = 6
- SubType
- fact-family
- Facts
- 6 + 6 = 12
- 6 + 6 = 12
- 12 - 6 = 6
- 12 - 6 = 6
- Difficulty
- normal
Write the fact family for 5, 15, 20:
Show answer
Answer: 5 + 15 = 20; 15 + 5 = 20; 20 - 5 = 15; 20 - 15 = 5
- SubType
- fact-family
- Facts
- 5 + 15 = 20
- 15 + 5 = 20
- 20 - 5 = 15
- 20 - 15 = 5
- Difficulty
- normal
Write the fact family for 5, 3, 8:
Show answer
Answer: 5 + 3 = 8; 3 + 5 = 8; 8 - 5 = 3; 8 - 3 = 5
- SubType
- fact-family
- Facts
- 5 + 3 = 8
- 3 + 5 = 8
- 8 - 5 = 3
- 8 - 3 = 5
- Difficulty
- normal
Write the fact family for 9, 1, 10:
Show answer
Answer: 9 + 1 = 10; 1 + 9 = 10; 10 - 9 = 1; 10 - 1 = 9
- SubType
- fact-family
- Facts
- 9 + 1 = 10
- 1 + 9 = 10
- 10 - 9 = 1
- 10 - 1 = 9
- Difficulty
- normal
Teaching Notes
Download this free fact family add sub within 20 write all 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 Write All 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.