medium Set 23 Form Exercise

Write the fact family for 8, 12, 20:

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

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

Write the fact family for 3, 12, 15:

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

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

Write the fact family for 19, 1, 20:

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Answer: 19 + 1 = 20; 1 + 19 = 20; 20 - 19 = 1; 20 - 1 = 19

SubType
fact-family
Facts
  • 19 + 1 = 20
  • 1 + 19 = 20
  • 20 - 19 = 1
  • 20 - 1 = 19
Difficulty
normal

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, 11, 13:

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Answer: 2 + 11 = 13; 11 + 2 = 13; 13 - 2 = 11; 13 - 11 = 2

SubType
fact-family
Facts
  • 2 + 11 = 13
  • 11 + 2 = 13
  • 13 - 2 = 11
  • 13 - 11 = 2
Difficulty
normal