Workbook Detail
Fact Family Add Sub Within 20 Hard — Set 45
Write the fact family for 9, 8, 72:
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Answer: 9 × 8 = 72; 8 × 9 = 72; 72 ÷ 9 = 8; 72 ÷ 8 = 9
- SubType
- fact-family
- Facts
- 9 × 8 = 72
- 8 × 9 = 72
- 72 ÷ 9 = 8
- 72 ÷ 8 = 9
- Difficulty
- hard
Write the fact family for 9, 8, 17:
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Answer: 9 + 8 = 17; 8 + 9 = 17; 17 - 9 = 8; 17 - 8 = 9
- SubType
- fact-family
- Facts
- 9 + 8 = 17
- 8 + 9 = 17
- 17 - 9 = 8
- 17 - 8 = 9
- Difficulty
- hard
Write the fact family for 1, 13, 14:
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Answer: 1 + 13 = 14; 13 + 1 = 14; 14 - 1 = 13; 14 - 13 = 1
- SubType
- fact-family
- Facts
- 1 + 13 = 14
- 13 + 1 = 14
- 14 - 1 = 13
- 14 - 13 = 1
- Difficulty
- hard
Write the fact family for 5, 13, 18:
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Answer: 5 + 13 = 18; 13 + 5 = 18; 18 - 5 = 13; 18 - 13 = 5
- SubType
- fact-family
- Facts
- 5 + 13 = 18
- 13 + 5 = 18
- 18 - 5 = 13
- 18 - 13 = 5
- Difficulty
- hard
Write the fact family for 7, 8, 15:
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Answer: 7 + 8 = 15; 8 + 7 = 15; 15 - 7 = 8; 15 - 8 = 7
- SubType
- fact-family
- Facts
- 7 + 8 = 15
- 8 + 7 = 15
- 15 - 7 = 8
- 15 - 8 = 7
- Difficulty
- hard
Write the fact family for 17, 3, 20:
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Answer: 17 + 3 = 20; 3 + 17 = 20; 20 - 17 = 3; 20 - 3 = 17
- SubType
- fact-family
- Facts
- 17 + 3 = 20
- 3 + 17 = 20
- 20 - 17 = 3
- 20 - 3 = 17
- 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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