GCF and LCM

What is the least common multiple (LCM) of 4 and 10?

• 4
• 40
• 15
• 20

Tags

CCSS.6.NS.B.4

What is the LCM of 2, 4, 6?

• 6
• 12
• 4
• 2

Tags

CCSS.6.NS.B.4

What is the GCF of 14 and 20?

• 7

• 28

• 2

• 6

What is the GCF of 15 and 25?

• 14

• 40

• 5

• 10

What is the LCM of 10 and 5?

• 5

• 10

• 15

• 50

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

Tags

CCSS.6.NS.B.4

Two clocks are turned on at the same time. One clock chimes every 15 minutes. The other clock chimes every 25 minutes. In how many minutes will they chime together?

• 55 minutes
• 25 minutes
• 60 minutes
• 75 minutes

Tags

CCSS.6.NS.B.4

Lisa is making activity baskets to donate to charity.  She has 12 coloring books and 36 crayons.  What is the greatest number of baskets she can make if each type of toy is equally distributed among the baskets?

• 2
• 12
• 36
• 6

Tags

CCSS.6.NS.B.4

CCSS.6.RP.A.3

At Kentucky Fried Chicken, the kitchen staff baked 96 chicken legs and 144 thighs.  The staff had to prepare platters for an office lunch.  If each platter will have the same number of legs and thighs, what is the greatest number of platters they can make?

• 48
• 2
• 4
• 16

Tags

CCSS.6.NS.B.4

Jeremy has two pieces of wood:  one is 90 inches and the other is 72 inches. He wants to cut both pieces into smaller pieces of the same length.  What is the longest possible length he can cut and not have any lumber left over?

• 9
• 2
• 18
• 72

Tags

CCSS.6.NS.B.4