Workbook Detail
Fact Family Add Sub Within 20 Easy — Set 81
Write the fact family for 12, 3, 15:
Show answer
Answer: 12 + 3 = 15; 3 + 12 = 15; 15 - 12 = 3; 15 - 3 = 12
- SubType
- fact-family
- Facts
- 12 + 3 = 15
- 3 + 12 = 15
- 15 - 12 = 3
- 15 - 3 = 12
- Difficulty
- easy
Write the fact family for 2, 7, 9:
Show answer
Answer: 2 + 7 = 9; 7 + 2 = 9; 9 - 2 = 7; 9 - 7 = 2
- SubType
- fact-family
- Facts
- 2 + 7 = 9
- 7 + 2 = 9
- 9 - 2 = 7
- 9 - 7 = 2
- Difficulty
- easy
Write the fact family for 18, 2, 20:
Show answer
Answer: 18 + 2 = 20; 2 + 18 = 20; 20 - 18 = 2; 20 - 2 = 18
- SubType
- fact-family
- Facts
- 18 + 2 = 20
- 2 + 18 = 20
- 20 - 18 = 2
- 20 - 2 = 18
- Difficulty
- easy
Write the fact family for 3, 1, 4:
Show answer
Answer: 3 + 1 = 4; 1 + 3 = 4; 4 - 3 = 1; 4 - 1 = 3
- SubType
- fact-family
- Facts
- 3 + 1 = 4
- 1 + 3 = 4
- 4 - 3 = 1
- 4 - 1 = 3
- Difficulty
- easy
Write the fact family for 9, 3, 12:
Show answer
Answer: 9 + 3 = 12; 3 + 9 = 12; 12 - 9 = 3; 12 - 3 = 9
- SubType
- fact-family
- Facts
- 9 + 3 = 12
- 3 + 9 = 12
- 12 - 9 = 3
- 12 - 3 = 9
- Difficulty
- easy
Write the fact family for 3, 10, 13:
Show answer
Answer: 3 + 10 = 13; 10 + 3 = 13; 13 - 3 = 10; 13 - 10 = 3
- SubType
- fact-family
- Facts
- 3 + 10 = 13
- 10 + 3 = 13
- 13 - 3 = 10
- 13 - 10 = 3
- Difficulty
- easy
Teaching Notes
Practice fact family add sub within 20 with free printable worksheets. Uniquely generated — reinforce key math skills with every set.
Frequently Asked Questions
How do I use this Fact Family Add Sub Within 20 Easy Worksheets 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.