GCF LCM

Which of the choices is not a factor of 24?

• 2
• 3
• 4
• 5

Tags

CCSS.4.OA.B.4

List all the factors of 12

• 1, 2, 3, 4, 6, 12
• 1, 2, 4, 12
• 1, 12
• 1, 2, 3, 4, 5, 6, 12

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?

• 48 seconds
• 45 seconds
• 16 seconds
• 8 seconds

Peter has 18 oranges, 27 pears and 12 bananas. He wants to make fruit baskets with the same number of each fruit in each basket. How many PEARS will be in each of fruit baskets?

• 7

• 8

• 9

• 10

The school cafeteria serves tacos every sixth day and cheeseburgers every eight 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

• 24 days

• 34 days

• 44 days

What is the greatest common factor (GCF) of 8 and 20?

• 8
• 2
• 4
• 10

What is the greatest common factor (GCF) of 35 and 49?

• 5
• 3
• 7
• 4

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?

• 4
• 2
• 48
• 8

What is the GCF of 20, 44, and 88?

• 4
• 2
• 22
• 1

Find the Least Common Multiple of 9 and 6

• 18
• 36
• 38
• 72