Common factors

Identify the common factors of each set of numbers. 45, 75

• 3
• 5
• 7
• 15

Identify the common factors of each set of numbers. 36, 90

• 2.6
• 3.9
• 18
• 15

Identify the common factors of each set of numbers. 6, 21, 30

• 1
• 2
• 3
• 4

Identify the common factors of each set of numbers. 16, 24, 40

• 2
• 4.8
• 6
• 12

Which number is not a common factor of 24 and 36?

• 2
• 12
• 6
• 24

Identify the common factors of each set of numbers. 11, 44

• 11
• 2
• 4
• 22

Identify the common factors of each set of numbers. 12, 21, 30

• 2
• 7
• 3
• 4