medium Set 81 Form Exercise

Write the fact family for 4, 3, 7:

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Answer: 4 + 3 = 7; 3 + 4 = 7; 7 - 4 = 3; 7 - 3 = 4

SubType
fact-family
Facts
  • 4 + 3 = 7
  • 3 + 4 = 7
  • 7 - 4 = 3
  • 7 - 3 = 4
Difficulty
medium

Write the fact family for 2, 10, 20:

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Answer: 2 × 10 = 20; 10 × 2 = 20; 20 ÷ 2 = 10; 20 ÷ 10 = 2

SubType
fact-family
Facts
  • 2 × 10 = 20
  • 10 × 2 = 20
  • 20 ÷ 2 = 10
  • 20 ÷ 10 = 2
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 6, 2, 8:

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Answer: 6 + 2 = 8; 2 + 6 = 8; 8 - 6 = 2; 8 - 2 = 6

SubType
fact-family
Facts
  • 6 + 2 = 8
  • 2 + 6 = 8
  • 8 - 6 = 2
  • 8 - 2 = 6
Difficulty
medium

Write the fact family for 7, 1, 8:

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

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

Write the fact family for 10, 3, 30:

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Answer: 10 × 3 = 30; 3 × 10 = 30; 30 ÷ 10 = 3; 30 ÷ 3 = 10

SubType
fact-family
Facts
  • 10 × 3 = 30
  • 3 × 10 = 30
  • 30 ÷ 10 = 3
  • 30 ÷ 3 = 10
Difficulty
medium