Workbook Detail
Fact Family Add Sub Within 20 Hard — Set 21
Write the fact family for 18, 2, 20:
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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
- hard
Write the fact family for 5, 10, 15:
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Answer: 5 + 10 = 15; 10 + 5 = 15; 15 - 5 = 10; 15 - 10 = 5
- SubType
- fact-family
- Facts
- 5 + 10 = 15
- 10 + 5 = 15
- 15 - 5 = 10
- 15 - 10 = 5
- Difficulty
- hard
Write the fact family for 12, 4, 48:
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Answer: 12 × 4 = 48; 4 × 12 = 48; 48 ÷ 12 = 4; 48 ÷ 4 = 12
- SubType
- fact-family
- Facts
- 12 × 4 = 48
- 4 × 12 = 48
- 48 ÷ 12 = 4
- 48 ÷ 4 = 12
- Difficulty
- hard
Write the fact family for 10, 5, 15:
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Answer: 10 + 5 = 15; 5 + 10 = 15; 15 - 10 = 5; 15 - 5 = 10
- SubType
- fact-family
- Facts
- 10 + 5 = 15
- 5 + 10 = 15
- 15 - 10 = 5
- 15 - 5 = 10
- Difficulty
- hard
Write the fact family for 5, 4, 20:
Show answer
Answer: 5 × 4 = 20; 4 × 5 = 20; 20 ÷ 5 = 4; 20 ÷ 4 = 5
- SubType
- fact-family
- Facts
- 5 × 4 = 20
- 4 × 5 = 20
- 20 ÷ 5 = 4
- 20 ÷ 4 = 5
- Difficulty
- hard
Write the fact family for 13, 2, 15:
Show answer
Answer: 13 + 2 = 15; 2 + 13 = 15; 15 - 13 = 2; 15 - 2 = 13
- SubType
- fact-family
- Facts
- 13 + 2 = 15
- 2 + 13 = 15
- 15 - 13 = 2
- 15 - 2 = 13
- Difficulty
- hard
Teaching Notes
Practice fact family add sub within 20 with free printable worksheets. Uniquely generated — reinforce key math skills with every set.
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