medium Set 27 Form Exercise

Write the fact family for 18, 2, 20:

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Answer: 18 + 2 = 20; 2 + 18 = 20; 20 - 18 = 2; 20 - 2 = 18

SubType
fact-family
Facts
  • 18 + 2 = 20
  • 2 + 18 = 20
  • 20 - 18 = 2
  • 20 - 2 = 18
Difficulty
normal

Write the fact family for 16, 1, 17:

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Answer: 16 + 1 = 17; 1 + 16 = 17; 17 - 16 = 1; 17 - 1 = 16

SubType
fact-family
Facts
  • 16 + 1 = 17
  • 1 + 16 = 17
  • 17 - 16 = 1
  • 17 - 1 = 16
Difficulty
normal

Write the fact family for 17, 1, 18:

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Answer: 17 + 1 = 18; 1 + 17 = 18; 18 - 17 = 1; 18 - 1 = 17

SubType
fact-family
Facts
  • 17 + 1 = 18
  • 1 + 17 = 18
  • 18 - 17 = 1
  • 18 - 1 = 17
Difficulty
normal

Write the fact family for 15, 5, 20:

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Answer: 15 + 5 = 20; 5 + 15 = 20; 20 - 15 = 5; 20 - 5 = 15

SubType
fact-family
Facts
  • 15 + 5 = 20
  • 5 + 15 = 20
  • 20 - 15 = 5
  • 20 - 5 = 15
Difficulty
normal

Write the fact family for 11, 9, 20:

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Answer: 11 + 9 = 20; 9 + 11 = 20; 20 - 11 = 9; 20 - 9 = 11

SubType
fact-family
Facts
  • 11 + 9 = 20
  • 9 + 11 = 20
  • 20 - 11 = 9
  • 20 - 9 = 11
Difficulty
normal

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
normal