Timer 1 is set to beep every 8 minutes. Timer 2 is set to beep every 6 minutes. How many times will they beep at the same time in 30 minutes? (use LCM)
1
200
List the factors of 12 and 20.
12-2x2x3
20-2x2x5
200
List 6 multiples of 2 and 6.
2-2,4,6,8,10,12
6-6,12,18,24,30,36
200
What is the greatest common factor of 24 and 20?
4
200
What is the least common multiple of 4 and 9?
36
200
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? (use LCM)
15th game
300
List all of the factors of 42.
2x3x7
300
List all the multiples of 5 and 8 that are less than 30.
5-5,10,15,20,25,30
8-8,16,24
300
What is the greatest factor of 16 and 36?
4
300
What is the least common multiple of 2, 3, and 5?
30
300
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? (use GCF)
12
400
List all of the factors of 52.
2x2x13
400
List 4 multiples of 7 greater than 10 but less than 50.
14, 21, 28, 35, 42, 49
400
What is the great common factor of 50, 35, and 15?
5
400
What is the least common multiple of 20 and 12?
60
400
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? (use LCM)
48 minutes
500
List all of the factors of 24 and 36.
24-2x2x2x3
36-2x2x3x3
500
List all the multiples of 12 and 18 that are less than 75.
12-12,24,36,48,60,72
18-18,36,54,72
500
What is the greatest common factor of 64 and 80?
16
500
What is the least common multiple of 21 and 24?
168
500
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? (use GCF)