Factors
What is the greatest common factor of 12 and 15
3
What is the least common multiple of 3 and 9?
9
Timer 1 is set to beep every 8 minutes. Timer 2 is set to beep every 6 minutes. When will the timers beep at the same time?
24 minutes
List all of the factors of 20.
1, 2, 4, 5, 10, 20
List 3 multiples of 6.
12, 18, 24
What is the least common multiple of 4 and 18?
36
You bring snacks for your basketball team every fifth game. Every third game is a home game. When will be the first time that you bring snacks to a home game? (LCM)
15th game
List all the multiples of 8 that are less than 50.
8, 16, 24, 32, 40, 48
What is the least common multiple of 12, 32, and 24?
576
Sarah is making bead necklaces. She has 60 blue beads and 72 green beads. What is the greatest number of identical necklaces she can make if she wants to use all the beads?
List all of the factors of 40.
1, 2, 4, 5, 8, 10, 20, 40
List 4 multiples of 7 greater than 10 but less than 50.
14, 21, 28, 35, 42, 49
What is the least common multiple of 20 and 12?
60
Three pigs entered a race around a track. Piggly takes 12 minutes to run one lap. Piglet takes 6 minutes to run one lap and it takes Wiggly 16 minutes to run one lap. If all three pigs begin the race at the same time, how many minutes will it take for all three pigs to be at the starting point again?
288 minutes
List all of the factors of 36.
1, 2, 3, 4, 9, 12, 18, 36
List all the multiples of 12 that are less than 75.
12, 24, 36, 48, 60, 72
What is the least common multiple of 21 and 24?
168
Johnny baked 36 oatmeal cookies and 48 chocolate chip cookies to package in plastic containers for his teacher friends at school. He wants to divide the cookies into identical containers so that each container has the same number of each kind of cookie. If he wants each container to have the greatest number of cookies possible, how many plastic containers does he need?
12 plastic containers