Greatest Common Factor and Least Common Multiple Review

What is the Least Common Multiple of 10 and 48?

• 240

• 260

• 480

• 140

What is the Least Common Multiple of 15 and 90?

• 90

• 45

• 180

• 120

What is the Least Common Multiple of 5 and 11?

• 45

• 66

• 25

• 55

Find the GCF of 12 and 6. 

HINT: Start big and go smaller! Can it go into both numbers evenly?

• 1

• 6

• 2

• 3

Find the GCF (Greatest Common Factor) of 50 and 40. HINT: Start big and go smaller! Can it go into both numbers evenly?

• 5

• 2

• 10

• 8

What is the least common multiple (LCM) of 8 and 5? HINT: Start small and go bigger! Can you divide it by BOTH numbers?

• 50

• 40

• 5

• 8

GCF of 32 and 40

HINT: Start big and go smaller! Can it go into both numbers evenly?

• 2

• 4

• 6

• 8

Find the LCM of each set of numbers.  5, 10, 15 

HINT: Start small and go bigger! Can you divide it by BOTH numbers?

• 50

• 30

• 90

• 150

LCM (9, 12)

HINT: Start small and go bigger! Can you divide it by BOTH numbers?

• 9

• 36

• 12

• 3

GCF (25, 15)

HINT: Start big and go smaller! Can it go into both numbers evenly?

• 5

• 10

• 15

• 20