Workbook Detail
Fact Family Add Sub Within 20 Medium — Set 54
Write the fact family for 1, 1, 2:
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Answer: 1 + 1 = 2; 1 + 1 = 2; 2 - 1 = 1; 2 - 1 = 1
- SubType
- fact-family
- Facts
- 1 + 1 = 2
- 1 + 1 = 2
- 2 - 1 = 1
- 2 - 1 = 1
- 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 11, 7, 18:
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Answer: 11 + 7 = 18; 7 + 11 = 18; 18 - 11 = 7; 18 - 7 = 11
- SubType
- fact-family
- Facts
- 11 + 7 = 18
- 7 + 11 = 18
- 18 - 11 = 7
- 18 - 7 = 11
- Difficulty
- medium
Write the fact family for 2, 6, 12:
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Answer: 2 × 6 = 12; 6 × 2 = 12; 12 ÷ 2 = 6; 12 ÷ 6 = 2
- SubType
- fact-family
- Facts
- 2 × 6 = 12
- 6 × 2 = 12
- 12 ÷ 2 = 6
- 12 ÷ 6 = 2
- Difficulty
- medium
Write the fact family for 9, 11, 99:
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Answer: 9 × 11 = 99; 11 × 9 = 99; 99 ÷ 9 = 11; 99 ÷ 11 = 9
- SubType
- fact-family
- Facts
- 9 × 11 = 99
- 11 × 9 = 99
- 99 ÷ 9 = 11
- 99 ÷ 11 = 9
- Difficulty
- medium
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
- medium
Teaching Notes
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