Workbook Detail
Fact Family Add Sub Within 20 Easy — Set 20
Write the fact family for 1, 8, 9:
Show answer
Answer: 1 + 8 = 9; 8 + 1 = 9; 9 - 1 = 8; 9 - 8 = 1
- SubType
- fact-family
- Facts
- 1 + 8 = 9
- 8 + 1 = 9
- 9 - 1 = 8
- 9 - 8 = 1
- Difficulty
- easy
Write the fact family for 6, 13, 19:
Show answer
Answer: 6 + 13 = 19; 13 + 6 = 19; 19 - 6 = 13; 19 - 13 = 6
- SubType
- fact-family
- Facts
- 6 + 13 = 19
- 13 + 6 = 19
- 19 - 6 = 13
- 19 - 13 = 6
- Difficulty
- easy
Write the fact family for 10, 7, 17:
Show answer
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
- easy
Write the fact family for 3, 8, 11:
Show answer
Answer: 3 + 8 = 11; 8 + 3 = 11; 11 - 3 = 8; 11 - 8 = 3
- SubType
- fact-family
- Facts
- 3 + 8 = 11
- 8 + 3 = 11
- 11 - 3 = 8
- 11 - 8 = 3
- Difficulty
- easy
Write the fact family for 4, 4, 8:
Show answer
Answer: 4 + 4 = 8; 4 + 4 = 8; 8 - 4 = 4; 8 - 4 = 4
- SubType
- fact-family
- Facts
- 4 + 4 = 8
- 4 + 4 = 8
- 8 - 4 = 4
- 8 - 4 = 4
- Difficulty
- easy
Write the fact family for 17, 1, 18:
Show answer
Answer: 17 + 1 = 18; 1 + 17 = 18; 18 - 17 = 1; 18 - 1 = 17
- SubType
- fact-family
- Facts
- 17 + 1 = 18
- 1 + 17 = 18
- 18 - 17 = 1
- 18 - 1 = 17
- 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.