Real-World LCM Challenges for Grade 6 Mastery

1. Sarah has 12 apples and 18 oranges. She wants to make fruit baskets with the same number of each fruit. What is the least number of baskets she can make?

• 6

• 8

• 4

• 10

2. A school bell rings every 15 minutes, and a class bell rings every 20 minutes. If both bells ring together at 8:00 AM, when will they next ring together?

• 9:00 AM

• 10:00 AM

• 9:15 AM

• 8:15 AM

3. Tom is planting flowers in rows. He has 24 tulips and 36 daisies. What is the largest number of equal rows he can plant with both types of flowers?

• 12

• 24

• 6

• 18

4. A bus leaves the station every 30 minutes, and a train leaves every 45 minutes. If they both leave at 9:00 AM, when will they next leave together?

• 10:30 AM

• 10:15 AM

• 11:00 AM

• 10:00 AM

5. Lisa is making gift bags. She has 16 candies and 24 stickers. What is the maximum number of identical gift bags she can create?

• 10

• 8

• 12

• 6

6. Two friends are skipping rope. One can complete a round in 8 seconds, and the other in 12 seconds. If they start together, how long will it take for them to skip together again?

• 16 seconds

• 32 seconds

• 20 seconds

• 24 seconds

7. A gardener is planting trees in rows. He has 40 apple trees and 60 orange trees. What is the greatest number of rows he can plant with the same number of trees in each row?

• 30

• 50

• 20

• 10

8. A movie theater shows a film every 25 minutes, and a different film every 35 minutes. If both films start at 1:00 PM, when will they start at the same time again?

• 3:55 PM

• 4:10 PM

• 3:30 PM

• 2:45 PM

9. A baker makes batches of cookies. Each batch has 18 cookies, and he also makes batches of brownies with 24 brownies. What is the largest number of batches he can make with the same number of cookies and brownies?

• 3

• 2

• 4

• 5

10. Two cyclists start a race at the same time. One completes a lap in 10 minutes, and the other in 15 minutes. How long will it take for them to be at the starting point together again?

• 40 minutes

• 25 minutes

• 30 minutes

• 20 minutes