LCM/GCF

Find the LCM of 18 and 24

• 6
• 72
• 24
• 5

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

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

You have a set of 12 hearts, 16 diamonds, and 20 clubs that need to be put into equal groups.  Each group must be made up of the same number of hearts, diamonds, and clubs.  What is the greatest number of groups that can be made?

• 6 groups
• 2 groups
• 4 groups

Pencils come in packs of 8 and highlighters in packs of 12.  
A.  What is the least number of pencils and highlighters you need to buy for an equal amount?
B.  What is the least number of packages you need to buy to have an equal amount of pencils and highlighters?

• A. 4  B.  2 pencil and 3 highlighter
• A.  48  B.  6 pencil and 4 highlighter
• A. 24  B. 3 pencil and 2 highlighter

You have 18 red legos and 24 green legos.  You need to combine them into groups of the same size with the same number of red and green legos in each group.
A.  What is the greatest number of groups you can make?
B.  How many red and green legos will be in each group?

• A.  6 groups  B.  3 red and 4 green
• A.  72 groups  B.  6 red and 3 green
• A.  3 groups  B.  6 red and 8 green

An art project requires rows with the same number of discs and same amount of red and blue discs in each row.  You have 40 red discs and 24 blue discs.
A.  What is the greatest number of discs you could put in each row?
B.  How many red discs and blue discs will be in each row?

• A.  120 discs  B.  3 red and 5 blue
• A.  8 discs  B.  5 red and 3 blue
• A.  4 discs  B.  10 red and 6 blue

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

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

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