medium Set 87 Form Exercise

Write the fact family for 7, 8, 15:

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Answer: 7 + 8 = 15; 8 + 7 = 15; 15 - 7 = 8; 15 - 8 = 7

SubType
fact-family
Facts
  • 7 + 8 = 15
  • 8 + 7 = 15
  • 15 - 7 = 8
  • 15 - 8 = 7
Difficulty
normal

Write the fact family for 2, 15, 17:

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Answer: 2 + 15 = 17; 15 + 2 = 17; 17 - 2 = 15; 17 - 15 = 2

SubType
fact-family
Facts
  • 2 + 15 = 17
  • 15 + 2 = 17
  • 17 - 2 = 15
  • 17 - 15 = 2
Difficulty
normal

Write the fact family for 12, 3, 15:

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Answer: 12 + 3 = 15; 3 + 12 = 15; 15 - 12 = 3; 15 - 3 = 12

SubType
fact-family
Facts
  • 12 + 3 = 15
  • 3 + 12 = 15
  • 15 - 12 = 3
  • 15 - 3 = 12
Difficulty
normal

Write the fact family for 9, 4, 13:

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Answer: 9 + 4 = 13; 4 + 9 = 13; 13 - 9 = 4; 13 - 4 = 9

SubType
fact-family
Facts
  • 9 + 4 = 13
  • 4 + 9 = 13
  • 13 - 9 = 4
  • 13 - 4 = 9
Difficulty
normal

Write the fact family for 9, 1, 10:

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Answer: 9 + 1 = 10; 1 + 9 = 10; 10 - 9 = 1; 10 - 1 = 9

SubType
fact-family
Facts
  • 9 + 1 = 10
  • 1 + 9 = 10
  • 10 - 9 = 1
  • 10 - 1 = 9
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