Algebra GCF and HCF EOG

Find the HCF of 30 and 36

• 2

• 3

• 4

• 6

A carpenter got given some free wooden planks. Some are 12m long and some are 18m long. She wants to cut them up so that she has equal size planks to make using them easier. What size planks should she cut them into to avoid wasting any wood?

• HCF

• LCM

Find the HCF for 18, 36, and 81

• 3

• 2

• 6

• 9

Find the HCF of 40 and 60?

• 10

• 20

• 30

• None of the above

A carpenter got given some free wooden planks. Some are 12m long and some are 18m long. She wants to cut them up so that she has equal size planks to make using them easier. What size planks should she cut them into to avoid wasting any wood?

• HCF

• LCM

Find the HCF of 25 and 35

• 10

• 5

• 7

• 1

There are two loaf cakes. One is 35cm long and one is 21cm long. They want to cut the cake up and sell the slices, but all the slices must be equal. What is the largest slices that they can cut them into?

• HCF

• LCM

Find the HCF of 20 and 35

Find the HCF of 22 and 44

Find the HCF of 12 and 18