medium Set 78 Form Exercise

Write the fact family for 17, 3, 20:

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Answer: 17 + 3 = 20; 3 + 17 = 20; 20 - 17 = 3; 20 - 3 = 17

SubType
fact-family
Facts
  • 17 + 3 = 20
  • 3 + 17 = 20
  • 20 - 17 = 3
  • 20 - 3 = 17
Difficulty
normal

Write the fact family for 3, 16, 19:

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Answer: 3 + 16 = 19; 16 + 3 = 19; 19 - 3 = 16; 19 - 16 = 3

SubType
fact-family
Facts
  • 3 + 16 = 19
  • 16 + 3 = 19
  • 19 - 3 = 16
  • 19 - 16 = 3
Difficulty
normal

Write the fact family for 1, 12, 13:

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Answer: 1 + 12 = 13; 12 + 1 = 13; 13 - 1 = 12; 13 - 12 = 1

SubType
fact-family
Facts
  • 1 + 12 = 13
  • 12 + 1 = 13
  • 13 - 1 = 12
  • 13 - 12 = 1
Difficulty
normal

Write the fact family for 8, 10, 18:

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Answer: 8 + 10 = 18; 10 + 8 = 18; 18 - 8 = 10; 18 - 10 = 8

SubType
fact-family
Facts
  • 8 + 10 = 18
  • 10 + 8 = 18
  • 18 - 8 = 10
  • 18 - 10 = 8
Difficulty
normal

Write the fact family for 12, 8, 20:

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Answer: 12 + 8 = 20; 8 + 12 = 20; 20 - 12 = 8; 20 - 8 = 12

SubType
fact-family
Facts
  • 12 + 8 = 20
  • 8 + 12 = 20
  • 20 - 12 = 8
  • 20 - 8 = 12
Difficulty
normal

Write the fact family for 4, 15, 19:

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Answer: 4 + 15 = 19; 15 + 4 = 19; 19 - 4 = 15; 19 - 15 = 4

SubType
fact-family
Facts
  • 4 + 15 = 19
  • 15 + 4 = 19
  • 19 - 4 = 15
  • 19 - 15 = 4
Difficulty
normal