GCF & LCM

What is the least common multiple of 6 and 24?

• 36
• 12
• 24
• 18

Tags

CCSS.6.NS.B.4

What is the greatest common factor of 24 and 36?

• 12
• 24
• 18
• 6

Tags

CCSS.6.NS.B.4

What is the greatest common factor of 28 and 42?

• 21
• 7
• 28
• 14

Tags

CCSS.6.NS.B.4

What is the greatest common factor of 12 and 64?

• 6
• 4
• 12
• 8

Tags

CCSS.6.NS.B.4

What is the greatest common factor of 8 and 16?

• 16
• 12
• 8
• 4

Tags

CCSS.6.NS.B.4

Shanti is making prize bags for her friends. She will use a total of 32 toys and 40 erasers in the prize bags. What is the greatest number of bags Shanti can make if she wants each bag to have the same number of toys and erasers?

• 10
• 8
• 16
• 4

Tags

CCSS.6.NS.B.4

Iris takes her clothes to the laundromat every 6 days, and Eddie takes his clothes to the laundromat every 8 days. They both go to the laundromat today. How many days pass until the next time Iris and Eddie take their clothes to the laundromat on the same day?

• 20 days
• 24 days
• 30 days
• 18 days

Tags

CCSS.6.NS.B.4

True or False: The greatest common factor of 18 and 30 is 3?

• False
• True

Tags

CCSS.6.NS.B.4

True or False: A common factor of 18 and 30 is 9.

• True
• False

Tags

CCSS.6.NS.B.4

True or False: The least common multiple of 18 and 30 is 90.

• False
• True

Tags

CCSS.6.NS.B.4