Workbook Detail
Fact Family Add Sub Within 20 Hard — Set 61
Write the fact family for 17, 1, 18:
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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, 16, 19:
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Answer: 3 + 16 = 19; 16 + 3 = 19; 19 - 3 = 16; 19 - 16 = 3
- SubType
- fact-family
- Facts
- 3 + 16 = 19
- 16 + 3 = 19
- 19 - 3 = 16
- 19 - 16 = 3
- Difficulty
- hard
Write the fact family for 14, 1, 15:
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Answer: 14 + 1 = 15; 1 + 14 = 15; 15 - 14 = 1; 15 - 1 = 14
- SubType
- fact-family
- Facts
- 14 + 1 = 15
- 1 + 14 = 15
- 15 - 14 = 1
- 15 - 1 = 14
- Difficulty
- hard
Write the fact family for 16, 3, 19:
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Answer: 16 + 3 = 19; 3 + 16 = 19; 19 - 16 = 3; 19 - 3 = 16
- SubType
- fact-family
- Facts
- 16 + 3 = 19
- 3 + 16 = 19
- 19 - 16 = 3
- 19 - 3 = 16
- Difficulty
- hard
Write the fact family for 10, 8, 80:
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Answer: 10 × 8 = 80; 8 × 10 = 80; 80 ÷ 10 = 8; 80 ÷ 8 = 10
- SubType
- fact-family
- Facts
- 10 × 8 = 80
- 8 × 10 = 80
- 80 ÷ 10 = 8
- 80 ÷ 8 = 10
- Difficulty
- hard
Write the fact family for 13, 7, 20:
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Answer: 13 + 7 = 20; 7 + 13 = 20; 20 - 13 = 7; 20 - 7 = 13
- SubType
- fact-family
- Facts
- 13 + 7 = 20
- 7 + 13 = 20
- 20 - 13 = 7
- 20 - 7 = 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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