medium Set 45 Form Exercise

Write the fact family for 20, 21, 41:

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Answer: 20 + 21 = 41; 21 + 20 = 41; 41 - 20 = 21; 41 - 21 = 20

SubType
fact-family
Facts
  • 20 + 21 = 41
  • 21 + 20 = 41
  • 41 - 20 = 21
  • 41 - 21 = 20
Difficulty
normal

Write the fact family for 24, 15, 39:

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Answer: 24 + 15 = 39; 15 + 24 = 39; 39 - 24 = 15; 39 - 15 = 24

SubType
fact-family
Facts
  • 24 + 15 = 39
  • 15 + 24 = 39
  • 39 - 24 = 15
  • 39 - 15 = 24
Difficulty
normal

Write the fact family for 28, 19, 47:

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Answer: 28 + 19 = 47; 19 + 28 = 47; 47 - 28 = 19; 47 - 19 = 28

SubType
fact-family
Facts
  • 28 + 19 = 47
  • 19 + 28 = 47
  • 47 - 28 = 19
  • 47 - 19 = 28
Difficulty
normal

Write the fact family for 30, 20, 50:

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Answer: 30 + 20 = 50; 20 + 30 = 50; 50 - 30 = 20; 50 - 20 = 30

SubType
fact-family
Facts
  • 30 + 20 = 50
  • 20 + 30 = 50
  • 50 - 30 = 20
  • 50 - 20 = 30
Difficulty
normal

Write the fact family for 38, 9, 47:

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Answer: 38 + 9 = 47; 9 + 38 = 47; 47 - 38 = 9; 47 - 9 = 38

SubType
fact-family
Facts
  • 38 + 9 = 47
  • 9 + 38 = 47
  • 47 - 38 = 9
  • 47 - 9 = 38
Difficulty
normal

Write the fact family for 19, 11, 30:

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Answer: 19 + 11 = 30; 11 + 19 = 30; 30 - 19 = 11; 30 - 11 = 19

SubType
fact-family
Facts
  • 19 + 11 = 30
  • 11 + 19 = 30
  • 30 - 19 = 11
  • 30 - 11 = 19
Difficulty
normal