Reduce Fractions by Dividing by the Greatest Common Factor

The GCF of two whole numbers is the ________.

• smallest whole number that divides evenly into both numbers

• largest whole number that divides evenly into both numbers

• smallest whole number that both numbers divide into evenly

• largest whole number that both numbers divide into evenly

What is the name for the smallest multiple that two whole numbers share?

• greatest common factor

• infinite multiple

• least common multiple

• prime factor

Least common multiples are most helpful for ________.

• adding and subtracting fractions

• reducing fractions

• multiplying and dividing fractions

• finding the greatest common factor

What is the GCF of 12 and 30?

• 2

• 6

• 60

• 30

What is the GCF of 8 and 24?

• 4

• 8

• 24

• 48

What is the LCM of 3 and 6?

• 6

• 12

• 18

• 24

What is the LCM of 4 and 14?

• 2

• 4

• 48

• 28

What is the LCM of 9 and 15?

• 3

• 5

• 45

• 135