Year 6 - Factors

Factors & Multiples

Chapter 2 Review

GCF and LCM

WHAT IS A FACTOR ?

• a number that divides into another number exactly, without leaving a remainder

• A factor is a number when multiplied with another number produces a given number

What is a Multiple ?

• the meaning of a multiple is the product result of one number multiplied by another number

• aka THE RESULT

• aka THE ANSWER

• aka THE PRODUCT

Multiple Choice

What is GCF?

• Greatest Common Factor

• Good Common Fact

Fill in the Blanks

What is the GCF of 28 and 32?

Multiple Select

Select all factors of 6

• 1

• 2

• 3

• 4

• 6

Multiple Choice

What is the greatest common factor of 12 and 18?

• 2

• 4

• 12

• 6

Fill in the Blanks

What is the greatest common factor of 30 and 45?

GCF/LCM word problems

• If it asks for the "maximum" or the "largest number of groups", you will use the GCF

• If you are looking for overlapping dates or amounts that are bigger than the numbers given, you will use the LCM

• Think about what is "reasonable"

Multiple Choice

Mr. Rodriguez is packing bags of snacks for his children’s lunchboxes. If he has 20 blueberries and 30 grapes, what is the maximum number of bags of snacks that he can pack so that each bag has the same number of blueberries and grapes?

(hint, use the greatest common factor)

• 5 bags

• 10 bags

• 50 bags

• 60 bags

Multiple Choice

On James’s MP3 player, he has 12 sad songs and 40 upbeat songs that he wants to put into playlists. He wants to have the same number of sad songs and upbeat songs in each playlist. What is the maximum number of playlists that he can create?

• 2 playlists

• 3 playlists

• 4 playlists

• 10 playlists