LCM GCF Ladder

Ms. Waters was trying to find the GCF using the ladder method, but she made an error along the way! Identify the step where she went wrong. 

• Step 1

• Step 2

• Step 3

• Step 4

Find the Least Common Multiple (LCM) of 4 & 14.

• 14

• 20

• 28

• 56

What is the least common multiple of 5, 4, and 10?

• 20

• 60

• 10

• 30

What is the least common multiple (LCM) of 5 and 20?

• 4

• 5

• 20

• 100

Which pair of numbers has a GCF of 10 AND a LCM of 60?

• 2 and 5

• 20 and 30

• 5 and 10

• 15 and 20

Tags

TEKS.MATH.6.7A

The "Cake/Ladder" method can be used to solve...

• GCM

• LCM

• Simplify Fractions

• All of the Above.

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?

Show your work on the answer sheet.

• 4

• 2

• 48

• 8

What is the greatest common Factor between 30 and 45?

• 10

• 5

• 3

• 15

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

GCF 24 and 36

• 8

• 6

• 12

• 4