Workbook Detail
Fact Family Add Sub Within 20 Hard — Set 57
Write the fact family for 18, 1, 19:
Show answer
Answer: 18 + 1 = 19; 1 + 18 = 19; 19 - 18 = 1; 19 - 1 = 18
- SubType
- fact-family
- Facts
- 18 + 1 = 19
- 1 + 18 = 19
- 19 - 18 = 1
- 19 - 1 = 18
- Difficulty
- hard
Write the fact family for 6, 5, 30:
Show answer
Answer: 6 × 5 = 30; 5 × 6 = 30; 30 ÷ 6 = 5; 30 ÷ 5 = 6
- SubType
- fact-family
- Facts
- 6 × 5 = 30
- 5 × 6 = 30
- 30 ÷ 6 = 5
- 30 ÷ 5 = 6
- Difficulty
- hard
Write the fact family for 8, 12, 20:
Show answer
Answer: 8 + 12 = 20; 12 + 8 = 20; 20 - 8 = 12; 20 - 12 = 8
- SubType
- fact-family
- Facts
- 8 + 12 = 20
- 12 + 8 = 20
- 20 - 8 = 12
- 20 - 12 = 8
- Difficulty
- hard
Write the fact family for 12, 2, 14:
Show answer
Answer: 12 + 2 = 14; 2 + 12 = 14; 14 - 12 = 2; 14 - 2 = 12
- SubType
- fact-family
- Facts
- 12 + 2 = 14
- 2 + 12 = 14
- 14 - 12 = 2
- 14 - 2 = 12
- Difficulty
- hard
Write the fact family for 7, 10, 70:
Show answer
Answer: 7 × 10 = 70; 10 × 7 = 70; 70 ÷ 7 = 10; 70 ÷ 10 = 7
- SubType
- fact-family
- Facts
- 7 × 10 = 70
- 10 × 7 = 70
- 70 ÷ 7 = 10
- 70 ÷ 10 = 7
- Difficulty
- hard
Write the fact family for 3, 2, 6:
Show answer
Answer: 3 × 2 = 6; 2 × 3 = 6; 6 ÷ 3 = 2; 6 ÷ 2 = 3
- SubType
- fact-family
- Facts
- 3 × 2 = 6
- 2 × 3 = 6
- 6 ÷ 3 = 2
- 6 ÷ 2 = 3
- Difficulty
- hard
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 Hard 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.