Factors and Factor Pairs

​Lesson 8 Session 3:

Factors and Factor Pairs​

​I can find all the factor pairs of a given number.

Multiple Choice

Select a multiple that both 3 and 4 have in common.

• 15

• 12

• 8

• 9

​TJ wants to arrange his 30 toy cars into rows. He wants to put the same number of cars in each row. Find all the ways he can arrange his toy cars.

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Solve in your notebook.

​TJ wants to arrange his 30 toy cars into rows. He wants to put the same number of cars in each row. Find all the ways he can arrange his toy cars.

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• How did you get your answer?

• Describe step by step.

Multiple Choice

Which answer is not a way TJ could arrange his cars?

• 6 rows with 5 cars in each.

• 10 rows with 3 cars in each.

• 2 rows with 15 cars in each.

• 4 rows with 7 cars in each.

​Ways to find factor pairs

There are a few different ways to find factor pairs we are going to practice three different strategies. Find the one you like and get good at it.​

• T Chart

• Rainbow

• Array​

Multiple Select

What are the factor pairs of 20?

• 1 x 20

• 2 x 10

• 4 x 5

• 20 x 2

• 10 x 2

Multiple Choice

Harriet has 32 pencils she is putting in containers. She is putting the same number of pencils into one or more containers. Which list shows all of the possible numbers of pencils that Harriet could put in each container?

• 1 x 35

  2 x 12

  4 x 8

• 2 x 13

  3 x 12

  4 x 8

• 1 x 32

  2 x 16

  4 x 8

• 3 x 12

  2 x 15

  4 x 7

Multiple Select

What is a factor pair of 27? Select all that apply.

• 1 x 27

• 7 x 4

• 3 x 9

• 2 x 17

Match

Match the following factor pairs to the whole number.

• 19

• 35

• 72

• 50

• 44

1 x 19

7 x 5

36 x 2

10 x 5

4 x 11

• 1 x 19

• 7 x 5

• 36 x 2

• 10 x 5

• 4 x 11

Multiple Choice

Cora listed the factors of 45 as 1,5,9,45. Which factor pair did she forget?

• 3 x 15

• 7 x 7

• 6 x 8

• 3 x 3