hard Set 90 Form Exercise

Write the fact family for 2, 1, 3:

Show answer

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

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

Write the fact family for 5, 2, 7:

Show answer

Answer: 5 + 2 = 7; 2 + 5 = 7; 7 - 5 = 2; 7 - 2 = 5

SubType
fact-family
Facts
  • 5 + 2 = 7
  • 2 + 5 = 7
  • 7 - 5 = 2
  • 7 - 2 = 5
Difficulty
hard

Write the fact family for 7, 3, 21:

Show answer

Answer: 7 × 3 = 21; 3 × 7 = 21; 21 ÷ 7 = 3; 21 ÷ 3 = 7

SubType
fact-family
Facts
  • 7 × 3 = 21
  • 3 × 7 = 21
  • 21 ÷ 7 = 3
  • 21 ÷ 3 = 7
Difficulty
hard

Write the fact family for 6, 7, 42:

Show answer

Answer: 6 × 7 = 42; 7 × 6 = 42; 42 ÷ 6 = 7; 42 ÷ 7 = 6

SubType
fact-family
Facts
  • 6 × 7 = 42
  • 7 × 6 = 42
  • 42 ÷ 6 = 7
  • 42 ÷ 7 = 6
Difficulty
hard

Write the fact family for 9, 1, 10:

Show answer

Answer: 9 + 1 = 10; 1 + 9 = 10; 10 - 9 = 1; 10 - 1 = 9

SubType
fact-family
Facts
  • 9 + 1 = 10
  • 1 + 9 = 10
  • 10 - 9 = 1
  • 10 - 1 = 9
Difficulty
hard

Write the fact family for 4, 2, 8:

Show answer

Answer: 4 × 2 = 8; 2 × 4 = 8; 8 ÷ 4 = 2; 8 ÷ 2 = 4

SubType
fact-family
Facts
  • 4 × 2 = 8
  • 2 × 4 = 8
  • 8 ÷ 4 = 2
  • 8 ÷ 2 = 4
Difficulty
hard