Workbook Detail
Fact Family Add Sub Within 20 Medium — Set 100
Write the fact family for 9, 11, 20:
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Answer: 9 + 11 = 20; 11 + 9 = 20; 20 - 9 = 11; 20 - 11 = 9
- SubType
- fact-family
- Facts
- 9 + 11 = 20
- 11 + 9 = 20
- 20 - 9 = 11
- 20 - 11 = 9
- Difficulty
- medium
Write the fact family for 2, 12, 14:
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Answer: 2 + 12 = 14; 12 + 2 = 14; 14 - 2 = 12; 14 - 12 = 2
- SubType
- fact-family
- Facts
- 2 + 12 = 14
- 12 + 2 = 14
- 14 - 2 = 12
- 14 - 12 = 2
- Difficulty
- medium
Write the fact family for 10, 9, 19:
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Answer: 10 + 9 = 19; 9 + 10 = 19; 19 - 10 = 9; 19 - 9 = 10
- SubType
- fact-family
- Facts
- 10 + 9 = 19
- 9 + 10 = 19
- 19 - 10 = 9
- 19 - 9 = 10
- Difficulty
- medium
Write the fact family for 4, 8, 12:
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Answer: 4 + 8 = 12; 8 + 4 = 12; 12 - 4 = 8; 12 - 8 = 4
- SubType
- fact-family
- Facts
- 4 + 8 = 12
- 8 + 4 = 12
- 12 - 4 = 8
- 12 - 8 = 4
- Difficulty
- medium
Write the fact family for 10, 4, 40:
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Answer: 10 × 4 = 40; 4 × 10 = 40; 40 ÷ 10 = 4; 40 ÷ 4 = 10
- SubType
- fact-family
- Facts
- 10 × 4 = 40
- 4 × 10 = 40
- 40 ÷ 10 = 4
- 40 ÷ 4 = 10
- Difficulty
- medium
Write the fact family for 7, 6, 42:
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Answer: 7 × 6 = 42; 6 × 7 = 42; 42 ÷ 7 = 6; 42 ÷ 6 = 7
- SubType
- fact-family
- Facts
- 7 × 6 = 42
- 6 × 7 = 42
- 42 ÷ 7 = 6
- 42 ÷ 6 = 7
- Difficulty
- medium
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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