Workbook Detail
Fact Family Add Sub Within 20 Hard — Set 92
Write the fact family for 19, 1, 20:
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Answer: 19 + 1 = 20; 1 + 19 = 20; 20 - 19 = 1; 20 - 1 = 19
- SubType
- fact-family
- Facts
- 19 + 1 = 20
- 1 + 19 = 20
- 20 - 19 = 1
- 20 - 1 = 19
- Difficulty
- hard
Write the fact family for 11, 4, 15:
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Answer: 11 + 4 = 15; 4 + 11 = 15; 15 - 11 = 4; 15 - 4 = 11
- SubType
- fact-family
- Facts
- 11 + 4 = 15
- 4 + 11 = 15
- 15 - 11 = 4
- 15 - 4 = 11
- Difficulty
- hard
Write the fact family for 8, 9, 72:
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Answer: 8 × 9 = 72; 9 × 8 = 72; 72 ÷ 8 = 9; 72 ÷ 9 = 8
- SubType
- fact-family
- Facts
- 8 × 9 = 72
- 9 × 8 = 72
- 72 ÷ 8 = 9
- 72 ÷ 9 = 8
- Difficulty
- hard
Write the fact family for 11, 8, 88:
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Answer: 11 × 8 = 88; 8 × 11 = 88; 88 ÷ 11 = 8; 88 ÷ 8 = 11
- SubType
- fact-family
- Facts
- 11 × 8 = 88
- 8 × 11 = 88
- 88 ÷ 11 = 8
- 88 ÷ 8 = 11
- Difficulty
- hard
Write the fact family for 8, 3, 11:
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Answer: 8 + 3 = 11; 3 + 8 = 11; 11 - 8 = 3; 11 - 3 = 8
- SubType
- fact-family
- Facts
- 8 + 3 = 11
- 3 + 8 = 11
- 11 - 8 = 3
- 11 - 3 = 8
- Difficulty
- hard
Write the fact family for 5, 12, 17:
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Answer: 5 + 12 = 17; 12 + 5 = 17; 17 - 5 = 12; 17 - 12 = 5
- SubType
- fact-family
- Facts
- 5 + 12 = 17
- 12 + 5 = 17
- 17 - 5 = 12
- 17 - 12 = 5
- Difficulty
- hard
Teaching Notes
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