LCM and GCF Computation and Word Problems

Ronald and Tim both did their laundry today. Ronald does laundry every 6 days and Tim does laundry every 9 days. How many days will it be until Ronald and Tim both do laundry on the same day again?

• 18 days

• 54 days

• 3 days

 Sara had 16 red flowers and 24 yellow flowers.  She wants to make bouquets with the same number of each color flower in each bouquet.  What is the greatest number of bouquets that she can make?

• 2 bouquets

• 12 bouquets

• 24 bouquets

• 8 bouquets

The school cafeteria serves tacos every sixth day and cheeseburgers every eighth day. If tacos and cheeseburgers are both on today’s menu, how many days will it be before they are both on the menu again?

• 14 days

• 68 days

• 24 days

• 48 days

A P.E. teacher needs to divide 12 male students and 18 female students into teams, each with the same combination of male students and female students and nobody left out. What is the greatest number of teams that can be formed?

• 12 teams

• 6 teams

• 24 teams

• 196 teams

Helen has just moved to a new town and wants to share plates of baked goods with her neighbors. She has 16 cookies and 6 brownies to share, and wants to split them equally among the plates with no food left over. What is the greatest number of plates she can make to share?

• 6 plates

• 8 plates

• 4 plates

• 2 plates

Shane is thinking of a secret number. He tells his brother that it is divisible by 5 and tells his friend that it is divisible by 10. If Shane is telling the truth to both of them, what is the smallest secret number that Shane could be thinking of?

• 10

• 15

• 50

• 20

Tags

CCSS.4.OA.B.4

Two neon signs are turned on at the same time. Both signs blink as they are turned on. One sign blinks every 9 seconds. The other sign blinks every 15 seconds. In how many seconds will they blink together again?

• 30 seconds

• 27 seconds

• 45 seconds

• 21 seconds

The Math Counts Club had a party at school. There were 20 cookies and 40 slices of pizza to be shared equally. Each student had the same number of whole cookies and the same number of slices of pizza with nothing left over. What is the greatest amount of students who could have been at the party?

• 20 students

• 5 students

• 800 students

• 40 students

Find the Greatest Common Factor for 16 and 24

• 8

• 16

• 12

• 4

Find the Least Common Multiple of 12 and 8.

• 16

• 96

• 24

• 20