medium Set 80 Form Exercise

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
medium

Write the fact family for 8, 1, 9:

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Answer: 8 + 1 = 9; 1 + 8 = 9; 9 - 8 = 1; 9 - 1 = 8

SubType
fact-family
Facts
  • 8 + 1 = 9
  • 1 + 8 = 9
  • 9 - 8 = 1
  • 9 - 1 = 8
Difficulty
medium

Write the fact family for 5, 5, 10:

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Answer: 5 + 5 = 10; 5 + 5 = 10; 10 - 5 = 5; 10 - 5 = 5

SubType
fact-family
Facts
  • 5 + 5 = 10
  • 5 + 5 = 10
  • 10 - 5 = 5
  • 10 - 5 = 5
Difficulty
medium

Write the fact family for 5, 2, 7:

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Answer: 5 + 2 = 7; 2 + 5 = 7; 7 - 5 = 2; 7 - 2 = 5

SubType
fact-family
Facts
  • 5 + 2 = 7
  • 2 + 5 = 7
  • 7 - 5 = 2
  • 7 - 2 = 5
Difficulty
medium

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
medium

Write the fact family for 5, 4, 20:

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Answer: 5 × 4 = 20; 4 × 5 = 20; 20 ÷ 5 = 4; 20 ÷ 4 = 5

SubType
fact-family
Facts
  • 5 × 4 = 20
  • 4 × 5 = 20
  • 20 ÷ 5 = 4
  • 20 ÷ 4 = 5
Difficulty
medium