Finding Factors Within 100

Generate Multiples Using Factors

​ Grade 4 Lesson 10.3

I can determine whether a number is a multiple of another number and generate list of multiples.

Factors are the numbers you multiply to get a number. For example, the factors of 12 are 1,2,3,4,6,12

​FACTORS:

​let us try few questions

Multiple Choice

The numbers 1, 2, 3, 4, 6, 12

• factors of 12

• multiples of 12

Multiple Choice

Factors of 24 are

• 1, 2, 3, 4, 6, 8, 12, 24

• 24, 48, 72...

Multiples

Products of multiplying a whole number by another number other than 0.

​

Multiples are NEVER ENDING

How do I find a multiple of a number?

• Think " Count on by"

• For example:

• multiples of 2: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20

• multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30

Multiple Choice

List the first five multiples of the number 4.

• 0, 4, 8, 12, 16

• 1, 2, 2, 4

• 4, 8, 12, 16, 20

Multiple Choice

The numbers 12, 24, 36 are

• factors of 12

• multiples of 12

What is the difference between a factor and a multiple?

Turn to the person sitting next to you and discuss. When you think you have the answser, raise your hand.

​Factors are the whole numbers we can multiply together to make a number

​Multiples of 4 are: 4, 8, 12, 16, 24, ...

​Factors of 4 are:1, 2, 4

​A multiple is a product of two factors. Example, 4 x 6 = 24 ; 24 is a multiple of 4

A litte trick to help you out!

Multiples have many numbers

Factors have few numbers

Multiple Choice

Which of the following is NOT a multiple of 5?

• 15

• 28

• 30

• 75

Multiple Choice

12, 24 and 30 are all multiples of ____.

• 4

• 5

• 6

• 8

Multiple Choice

2, 4 and 20 are some of the factors of ____.

• 2

• 10

• 25

• 40

Multiple Choice

8, 16, 24, ____, 40

• 32

• 33

• 34

• 35

Multiple Choice

True or False: 9 is a factor of 3.

• True

• False

Multiple Select

What are the possible factors of 8? (There are two answers to this problem!)

• 4 x 2

• 8 x1

• 3 x 5

Multiple Choice

What are the factors of 40?

• 1, 2, 4, 5, 8

• 1, 2, 4, 5, 8, 10, 20, 40

• 40, 80, 120