Greatest Common Factor & Least Common Multiple

This is the smallest whole number greater than zero that is a multiple of two whole numbers. Or, the smallest positive number that is a multiple of two or more numbers.

• Greatest Common Factor

• Factors

• Reciprocal

• Least Common Multiple

What is the greatest common factor of 16 and 24?

What is the greatest common factor of 35 and 47?

• 5

• 7

• 1

• 8

What is the GCF of 21 and 49?

What is the LCM of 5 and 10?

• 50

• 30

• 10

• 5

What is the LCM of 12 and 8?

• 96

• 24

• 36

• 72

What is the LCM of 6 and 10?

• 30

• 60

• 50

• 40

LCM of 12 and 6

• 18

• 36

• 24

• 12

LCM of 10 and 4

• 40

• 20

• 30

• 10

LCM of 6 and 8

• 24

• 12

• 48

• 14