LCM and GCF Quiz

Carleigh is preparing identical breakfast gift sets. There are 18 boxes of pancake mix and 27 jars of jam. What is the greatest number of gift sets she can prepare using all of the pancake mix and jam?

• 485

• 3

• 9

• 12

Josh and Eva are packing first-aid supplies. It takes Josh 12 minutes to fill a box with bandages. It takes Eva 8 minutes to fill a box with antibiotics. If they start packing boxes at the same time, how long will it be before they start filling a new box at the same time?

• 24

• 9

• 96

• 36

Sadie is helping her mother stain some shelves. Sadie stains a shelf every 25 minutes. Her mother stains a shelf every 15 minutes. If they start together, how long will it be before they finish staining a shelf at the same time?

• 5

• 50

• 3

• 25

A jeweler is making identical necklaces. He has 24 gold beads and 144 colored glass beads. What is the greatest number of necklaces he can make using all the gold beads and glass beads?

• 3456

• 12

• 2

• 4

What is the greatest common factor of the following numbers:

18 and 81

• 3

• 2

• 9

• 18

What is the greatest common factor of the following numbers:

14, 42, and 49

• 3

• 7

• 2

• 84

What is the least common multiple of the following numbers:

9 and 12

• 24

• 3

• 18

• 36

What is the least common multiple of the following numbers:

3, 7, and 21

• 1

• 3

• 21

• 42

Taylor is making identical balloon arrangements for the homecoming dance. She has 12 red balloons, 24 green balloons, and 18 blue balloons. What is the greatest number of arrangements that she can make?

• 6

• 9

• 2

• 3

Train "A" leaves a subway station every 12 minutes. Train "E" leaves every 9 minutes. If both trains just left the station on parallel tracks, when will both leave the stations together again?

• 108 minutes

• 3 minutes

• 36 Minutes

• 45 minutes