Greatest Common Factor and Least Common Multiple

Multiple Choice

Which of the following is a correct method to find the least common multiple (LCM) of two numbers?

• List the multiples of both numbers and find the smallest one they share.

• Add the two numbers together.

• Multiply the two numbers and subtract one.

• Divide the larger number by the smaller number.

Multiple Choice

What is the greatest common factor (GCF) of 36 and 48?

• 6

• 12

• 18

• 24

Fill in the Blanks

The least common multiple (LCM) is the

multiple that two numbers share.

Fill in the Blanks

Riley is making goody-bags for her friends. She has 45 fun-sized Skittles packages & 20 fun-sized Milky Ways. How many goody-bags can she make so each bag has the same amount of Skittles packages & the same amount of Milky Ways?

Multiple Choice

George was upset that hotdogs & buns didn’t come with the same amount in each package. There were 8 hotdogs in a package and 12 buns in a package. What is the least amount of total hotdogs and buns would he have to buy so he would have the same amount of each?

• 12

• 16

• 18

• 24

Fill in the Blanks

Mr. Pinello has 48 colored pencils and 32 markers to divide into containers for his

class. Mr. Pinello wants each container to have the same number of colored pencils

and the same number of markers. What is the greatest number of containers

Mr. Pinello can make?

Multiple Choice

Jenna goes to the library every 6 days. AJ goes to the library

every 8 days. If they see each other today, when will be the next

time they see each other? How many times will Jenna go to the

library? How many times will AJ go to the library?

• 24

• 18

• 16

• 12

Draw

Decide if each statement about 8 and 12 is true.

Choose True or False for EACH statement.

Multiple Select

What do all of the numbers below have in common?

8, 16, 24, 32, 40

Choose all the correct answers.

• They are multiples of 8.

• They are multiples of 6.

• They are factors of 8

• They have 6 as a factor.

• They have 8 as a factor.

Multiple Choice

Trace puts 36 markers into containers. He puts the same number of markers

into one or more containers with no markers left over. Which list shows all of

the possible numbers of markers that Terence can put into each container?

• 2,3,4,6,9

• 1, 2, 3, 4, 6, 9, 12, 18, 36

• 4, 8, 12, 16, 20, 24, 28, 32, 36

• 1, 2, 3, 4