Factors, Multiples and Arrays

Is 5 a common factor of 75 and 80?

• yes

• no

Find the missing factor.

28 = 7 x __

Find the missing factor.

40 = 5 x __

Find the missing factor.

63 = 9 x __

Which lists all the factors of 100?

• 1, 2, 4, 5, 10, 20, 25, 50, 100

• 1, 100

• 1, 2, 3, 4, 5, 6, 7, 8, 25, 50, 100

• 1, 2, 4, 5, 10

Which lists all the factors of 72

• 1, 2, 3, 4, 5, 6, 7, 8, 6, 5, 4, 3, 2, 1

• 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72

• 1, 2, 3, 4, 6, 8

• 1, 72

List the first four multiples of 8.

• 1, 2, 4, 8

• 8, 16, 24, 32

• 16, 24, 32, 40

• 2, 4, 6, 8, 10

Mila has a bag with 64 dog treats. She wants each of the dogs she is fostering to get the same number of treats.

What is one possible way for Mila to give the same number of treats to each dog with no treats left over?

Pro-Tip: Use arrays, a factor rainbow, or T-Chart.

• Each dog could get 5 treats.

• Each dog could get 7 treats.

• Each dog could get 8 treats.

• Each dog could get 3 treats.

What are the factors modeled by this array?

• 4 x 4

• 4 x 7

• 5 x 5

• 5 x 6

7 is a factor of which number?

Pro-Tip: Factors are multiplied to get a product.

• 8

• 13

• 19

• 21