medium Set 21 Form Exercise

Write the fact family for 10, 2, 12:

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Answer: 10 + 2 = 12; 2 + 10 = 12; 12 - 10 = 2; 12 - 2 = 10

SubType
fact-family
Facts
  • 10 + 2 = 12
  • 2 + 10 = 12
  • 12 - 10 = 2
  • 12 - 2 = 10
Difficulty
normal

Write the fact family for 2, 5, 7:

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

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

Write the fact family for 13, 7, 20:

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Answer: 13 + 7 = 20; 7 + 13 = 20; 20 - 13 = 7; 20 - 7 = 13

SubType
fact-family
Facts
  • 13 + 7 = 20
  • 7 + 13 = 20
  • 20 - 13 = 7
  • 20 - 7 = 13
Difficulty
normal

Write the fact family for 7, 11, 18:

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Answer: 7 + 11 = 18; 11 + 7 = 18; 18 - 7 = 11; 18 - 11 = 7

SubType
fact-family
Facts
  • 7 + 11 = 18
  • 11 + 7 = 18
  • 18 - 7 = 11
  • 18 - 11 = 7
Difficulty
normal

Write the fact family for 3, 8, 11:

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Answer: 3 + 8 = 11; 8 + 3 = 11; 11 - 3 = 8; 11 - 8 = 3

SubType
fact-family
Facts
  • 3 + 8 = 11
  • 8 + 3 = 11
  • 11 - 3 = 8
  • 11 - 8 = 3
Difficulty
normal

Write the fact family for 8, 5, 13:

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Answer: 8 + 5 = 13; 5 + 8 = 13; 13 - 8 = 5; 13 - 5 = 8

SubType
fact-family
Facts
  • 8 + 5 = 13
  • 5 + 8 = 13
  • 13 - 8 = 5
  • 13 - 5 = 8
Difficulty
normal