expert Set 39 Form Exercise

Write the fact family for 1, 7, 8:

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Answer: 1 + 7 = 8; 7 + 1 = 8; 8 - 1 = 7; 8 - 7 = 1

SubType
fact-family
Facts
  • 1 + 7 = 8
  • 7 + 1 = 8
  • 8 - 1 = 7
  • 8 - 7 = 1
Difficulty
expert

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
expert

Write the fact family for 8, 8, 64:

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Answer: 8 × 8 = 64; 8 × 8 = 64; 64 ÷ 8 = 8; 64 ÷ 8 = 8

SubType
fact-family
Facts
  • 8 × 8 = 64
  • 8 × 8 = 64
  • 64 ÷ 8 = 8
  • 64 ÷ 8 = 8
Difficulty
expert

Write the fact family for 5, 4, 9:

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Answer: 5 + 4 = 9; 4 + 5 = 9; 9 - 5 = 4; 9 - 4 = 5

SubType
fact-family
Facts
  • 5 + 4 = 9
  • 4 + 5 = 9
  • 9 - 5 = 4
  • 9 - 4 = 5
Difficulty
expert

Write the fact family for 3, 3, 6:

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Answer: 3 + 3 = 6; 3 + 3 = 6; 6 - 3 = 3; 6 - 3 = 3

SubType
fact-family
Facts
  • 3 + 3 = 6
  • 3 + 3 = 6
  • 6 - 3 = 3
  • 6 - 3 = 3
Difficulty
expert

Write the fact family for 2, 3, 5:

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Answer: 2 + 3 = 5; 3 + 2 = 5; 5 - 2 = 3; 5 - 3 = 2

SubType
fact-family
Facts
  • 2 + 3 = 5
  • 3 + 2 = 5
  • 5 - 2 = 3
  • 5 - 3 = 2
Difficulty
expert