Greatest Common Factor and Least Common Multiple Quiz

What is the greatest common factor (GCF) of 35 and 21?

• 7

• 5

• 2

• 10

What is the least common multiple (LCM) of 30 and 40?

• 120

• 70

• 60

• 90

Jimmy is making gift bags for a raffle. He has 40 packs of candy and 32 stuffed animals. He wants to divide the items evenly to make the greatest number of identical gift bags, with no leftover items. How many gift bags can he make?

• 8 gift bags

• 6 gift bags

• 10 gift bags

• 12 gift bags

The middle school basketball team practices every 6 days, and the high school team practices every 8 days. If both teams practiced today, after how many days will they practice on the same day again?

• 18 days

• 12 days

• 24 days

• 48 days

What is the GCF of 10 and 28?

• 2

• 5

• 4

• 7

What is the LCM of 28 and 35?

• 140

• 70

• 56

• 35

Shreya is making bouquets. She has 14 tulips and 21 carnations. She wants to divide the flowers evenly to make the greatest number of identical bouquets, with no leftover flowers. How many bouquets can she make?

• 7 bouquets

• 5 bouquets

• 6 bouquets

• 3 bouquets

Two ferris wheels at a carnival start turning at the same time. The first ferris wheel takes 12 minutes to make a full rotation, and the second ferris wheel takes 18 minutes to make a full rotation.

After how many minutes will the smallest amount of time pass before both ferris wheels are back at the starting position together?

• 24 minutes
• 30 minutes
• 48 minutes
• 36 minutes

Apply the distributive property to factor out the GCF and create an equivalent expression for 16 + 40.

• 8(2 + 5)

• 4(4 + 10)

• 2(8 + 20)

• 16(1 + 2.5)

Tags

CCSS.6.NS.B.4

What is the GCF of 25 and 15?

• 5

• 10

• 3

• 15