Workbook Detail
Fact Family Add Sub Within 20 Hard — Set 31
Write the fact family for 7, 5, 35:
Show answer
Answer: 7 × 5 = 35; 5 × 7 = 35; 35 ÷ 7 = 5; 35 ÷ 5 = 7
- SubType
- fact-family
- Facts
- 7 × 5 = 35
- 5 × 7 = 35
- 35 ÷ 7 = 5
- 35 ÷ 5 = 7
- Difficulty
- hard
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
- hard
Write the fact family for 16, 2, 18:
Show answer
Answer: 16 + 2 = 18; 2 + 16 = 18; 18 - 16 = 2; 18 - 2 = 16
- SubType
- fact-family
- Facts
- 16 + 2 = 18
- 2 + 16 = 18
- 18 - 16 = 2
- 18 - 2 = 16
- Difficulty
- hard
Write the fact family for 16, 4, 20:
Show answer
Answer: 16 + 4 = 20; 4 + 16 = 20; 20 - 16 = 4; 20 - 4 = 16
- SubType
- fact-family
- Facts
- 16 + 4 = 20
- 4 + 16 = 20
- 20 - 16 = 4
- 20 - 4 = 16
- Difficulty
- hard
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
- hard
Write the fact family for 3, 13, 16:
Show answer
Answer: 3 + 13 = 16; 13 + 3 = 16; 16 - 3 = 13; 16 - 13 = 3
- SubType
- fact-family
- Facts
- 3 + 13 = 16
- 13 + 3 = 16
- 16 - 3 = 13
- 16 - 13 = 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.