GCF and LCM

GCF and LCM

Do your best and show me what you got!

Multiple Choice

What are the factors of 25?

• 1, 2, 3, 5, 10, 15, 25
• 1, 5,  25
• 1, 25
• 1, 5

Multiple Choice

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

Multiple Choice

What are the first 5 multiples of 16?

• 1, 2, 4, 8, 16

• 16, 32, 48, 64, 80

• 16, 22, 38, 44, 50

• 1, 2, 3, 4, 5

Multiple Choice

What does GCF mean?

• Great Cookie Fever

• Greatest Common Factor

• Greatest Common Multiple

• Greatest Compared Factor

Multiple Choice

What is the GCF of 8 and 24?

• 1

• 24

• 8

• 4

Multiple Choice

What is the Greatest Common Factor of 23 and 78?

• 2

• 23

• 1

• 14

Multiple Choice

What is the Greatest Common Factor of 35 and 49

• 5

• 7

• 1

• 17

Multiple Choice

LCM stands for

• Least correct multiple
• Latest common multiple
• Least common multiple
• Laser classroom mouse

Multiple Choice

What is the Least Common Multiple of 5 and 11?

• 45

• 66

• 25

• 55

Multiple Choice

What is the Least Common Multiple of 4 and 14

• 28

• 42

• 56

• 24

Multiple Choice

What is the Least Common Multiple of 15 and 90?

• 90

• 45

• 180

• 120

Multiple Choice

What is the Least Common Multiple of 10 and 48?

• 240

• 260

• 480

• 140

Multiple Choice

What is the LCM of 2, 4, and 9?

• 18
• 36
• 27
• 40

Multiple Choice

There are 48 girls and 64 boys. 
The choir teacher plans to arrange the students in equal rows.
Only girls or boys will be in each row (no mixing of girls and boys in the same row). What is the greatest number of students that could be in each row?

• 8
• 6
• 16
• 12

Multiple Choice

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

Multiple Choice

Two neon signs are turned on at the same and begin to blink.  One sign links every 9 seconds.  The other blinks every 15 seconds.  In how many seconds will they blink together?

• 3
• 5
• 45
• 9

Multiple Choice

The school cafeteria serves tacos every sixth day and cheeseburgers every eighth day.  If tacos and cheeseburgers are both on today's menu, in how many days will they both be on the menu again?

• 24
• 2
• 6
• 12