Find the GCF of 16, 28, and 48

16: 1, 2, 4, 8, 1628: 1, 2, 4, 7, 14, 28

48: 1, 2, 3, 4, 6, 8, 12, 16, 24, 48

GCF = 4

Find the GCF of 36, 72, and 120

12 36 72 120

3 6 10

Find the LCM of 10, 25, and 30

10: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150

25: 25, 50, 75, 100, 125, 150, 175, 200

30: 30, 60, 90, 120, 150

LCM = 150

Find the LCM of 4, 7, and 14

14: 14, 28, 42, 567: 7, 14, 21, 28, 35, 424: 4, 8, 12, 16, 20, 24, 28

LCM = 28

Claire takes private swimming lessons every 6 days and piano lessons every 4 days. In 60 days, how often will she have swimming lessons and piano lessons on the same day?

6: 6, 12, 18, 24, 30, 36, 42, 48, 54, 60

4: 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60

5 times

Coach Crawford’s activity class has 12 boys and 18 girls. He wants to divide the class into equal teams so that each team has the same number of girls and boys. What is the greatest number of teams he can create?

How many girls and boys will be on each team?

6 12 18

23

6 teams with 2 boys and 3 girls on each team.