medium Set 100 Form Exercise

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 12, 5, 17:

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Answer: 12 + 5 = 17; 5 + 12 = 17; 17 - 12 = 5; 17 - 5 = 12

SubType
fact-family
Facts
  • 12 + 5 = 17
  • 5 + 12 = 17
  • 17 - 12 = 5
  • 17 - 5 = 12
Difficulty
normal

Write the fact family for 15, 3, 18:

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Answer: 15 + 3 = 18; 3 + 15 = 18; 18 - 15 = 3; 18 - 3 = 15

SubType
fact-family
Facts
  • 15 + 3 = 18
  • 3 + 15 = 18
  • 18 - 15 = 3
  • 18 - 3 = 15
Difficulty
normal

Write the fact family for 5, 15, 20:

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

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

Write the fact family for 10, 6, 16:

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Answer: 10 + 6 = 16; 6 + 10 = 16; 16 - 10 = 6; 16 - 6 = 10

SubType
fact-family
Facts
  • 10 + 6 = 16
  • 6 + 10 = 16
  • 16 - 10 = 6
  • 16 - 6 = 10
Difficulty
normal

Write the fact family for 12, 6, 18:

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Answer: 12 + 6 = 18; 6 + 12 = 18; 18 - 12 = 6; 18 - 6 = 12

SubType
fact-family
Facts
  • 12 + 6 = 18
  • 6 + 12 = 18
  • 18 - 12 = 6
  • 18 - 6 = 12
Difficulty
normal