Workbook Detail
Fact Family Add Sub Within 20 Hard — Set 80
Write the fact family for 10, 2, 20:
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Answer: 10 × 2 = 20; 2 × 10 = 20; 20 ÷ 10 = 2; 20 ÷ 2 = 10
- SubType
- fact-family
- Facts
- 10 × 2 = 20
- 2 × 10 = 20
- 20 ÷ 10 = 2
- 20 ÷ 2 = 10
- Difficulty
- hard
Write the fact family for 3, 14, 17:
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Answer: 3 + 14 = 17; 14 + 3 = 17; 17 - 3 = 14; 17 - 14 = 3
- SubType
- fact-family
- Facts
- 3 + 14 = 17
- 14 + 3 = 17
- 17 - 3 = 14
- 17 - 14 = 3
- Difficulty
- hard
Write the fact family for 4, 2, 8:
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Answer: 4 × 2 = 8; 2 × 4 = 8; 8 ÷ 4 = 2; 8 ÷ 2 = 4
- SubType
- fact-family
- Facts
- 4 × 2 = 8
- 2 × 4 = 8
- 8 ÷ 4 = 2
- 8 ÷ 2 = 4
- Difficulty
- hard
Write the fact family for 8, 12, 20:
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Answer: 8 + 12 = 20; 12 + 8 = 20; 20 - 8 = 12; 20 - 12 = 8
- SubType
- fact-family
- Facts
- 8 + 12 = 20
- 12 + 8 = 20
- 20 - 8 = 12
- 20 - 12 = 8
- Difficulty
- hard
Write the fact family for 3, 11, 33:
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Answer: 3 × 11 = 33; 11 × 3 = 33; 33 ÷ 3 = 11; 33 ÷ 11 = 3
- SubType
- fact-family
- Facts
- 3 × 11 = 33
- 11 × 3 = 33
- 33 ÷ 3 = 11
- 33 ÷ 11 = 3
- Difficulty
- hard
Write the fact family for 2, 14, 16:
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Answer: 2 + 14 = 16; 14 + 2 = 16; 16 - 2 = 14; 16 - 14 = 2
- SubType
- fact-family
- Facts
- 2 + 14 = 16
- 14 + 2 = 16
- 16 - 2 = 14
- 16 - 14 = 2
- Difficulty
- hard
Teaching Notes
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