expert Set 90 Form Exercise

Write the fact family for 1, 2, 3:

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Answer: 1 + 2 = 3; 2 + 1 = 3; 3 - 1 = 2; 3 - 2 = 1

SubType
fact-family
Facts
  • 1 + 2 = 3
  • 2 + 1 = 3
  • 3 - 1 = 2
  • 3 - 2 = 1
Difficulty
expert

Write the fact family for 7, 7, 49:

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Answer: 7 × 7 = 49; 7 × 7 = 49; 49 ÷ 7 = 7; 49 ÷ 7 = 7

SubType
fact-family
Facts
  • 7 × 7 = 49
  • 7 × 7 = 49
  • 49 ÷ 7 = 7
  • 49 ÷ 7 = 7
Difficulty
expert

Write the fact family for 10, 9, 90:

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Answer: 10 × 9 = 90; 9 × 10 = 90; 90 ÷ 10 = 9; 90 ÷ 9 = 10

SubType
fact-family
Facts
  • 10 × 9 = 90
  • 9 × 10 = 90
  • 90 ÷ 10 = 9
  • 90 ÷ 9 = 10
Difficulty
expert

Write the fact family for 8, 1, 9:

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Answer: 8 + 1 = 9; 1 + 8 = 9; 9 - 8 = 1; 9 - 1 = 8

SubType
fact-family
Facts
  • 8 + 1 = 9
  • 1 + 8 = 9
  • 9 - 8 = 1
  • 9 - 1 = 8
Difficulty
expert

Write the fact family for 6, 4, 24:

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Answer: 6 × 4 = 24; 4 × 6 = 24; 24 ÷ 6 = 4; 24 ÷ 4 = 6

SubType
fact-family
Facts
  • 6 × 4 = 24
  • 4 × 6 = 24
  • 24 ÷ 6 = 4
  • 24 ÷ 4 = 6
Difficulty
expert

Write the fact family for 4, 10, 40:

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Answer: 4 × 10 = 40; 10 × 4 = 40; 40 ÷ 4 = 10; 40 ÷ 10 = 4

SubType
fact-family
Facts
  • 4 × 10 = 40
  • 10 × 4 = 40
  • 40 ÷ 4 = 10
  • 40 ÷ 10 = 4
Difficulty
expert