Factors, Multiples, and Prime/Composite

Multiples

100

Name the first five multiples of 10.

What is 10, 20, 30, 40, 50?

200

Name the first five multiples of 3.

What is 3, 6, 9, 12, 15?

300

Name the first five multiples of 7.

What is 7, 14, 21, 28, 35?

400

Name the first five multiples of 9.

What is 9, 18, 27, 36, 45?

500

Name the first five multiples of 12.

What is 12, 24, 36, 48, 60?

Factors

100

What are the factors of 9?

1, 3, 9

200

What are the factors of 16?

1, 2, 4, 8, 16

300

The factors of 25

1, 5, 25

400

Name the factor pairs of 40.

1 and 40

2 and 20

4 and 10

5 and 8

500

Name the factor pairs of 60.

1 and 60

2 and 30

3 and 20

4 and 15

5 and 12

6 and 10

Vocabulary

100

What is a multiple of a number?

A multiple is the product or number multiplied by another number. Multiples can be found by skip counting.

200

What are factors of a number?

Factors are the numbers that are multiplied together to get a product.

300

What is a prime number?

A prime number is a whole number that only has two factors: one and the number itself.

400

What is a composite number?

A composite number is a whole number with more than two factors.

500

Explain the process of finding the factors of a number

Start with 1 x the number. Try 2, 3, 4, etc. When you repeat your factors, cross out the repeat - you’re done at this point. If you get doubles (such as 4 x 4), then you’re done. Repeats or doubles let you know you’re done.

Prime/Composite

100

Which number is prime?

A. 20

B. 15

C. 10

D. 5

D. 5

200

Which number is composite? 

A. 4

B. 5

C. 11

D. 17

A. 4

300

Which answer to the following is a prime number?

A. 3 + 4

B. 15 -5

C. 2 + 2

D. 9 - 3

A. 3 + 4= 7

400

Which answer to the following is a composite number?

A. 3 + 2

B. 2 + 0

C. 7 + 4

D. 8 + 1

D. 8 + 1

500

Is 36 a prime or composite number? 

If it is a composite number, list its factors.

composite; 1, 2, 3, 4, 6, 9, 12, 18, 36

Problem Solving

100

Find the missing multiples. 

2, 4, ___, 8, ____, 12, 14,____

2, 4, 6, 8, 12, 14, 16

200

List the factors of 24

1, 2, 3, 4, 6, 8, 12, 24

300

These are the factors of 42. Determine which numbers are prime or composite. 1, 2, 3, 6, 7, 14, 21, 42

Prime: 1, 2, 3, 7 Composite: 6, 14, 21, 42

400

What are the factors pairs of 50?

1 and 50,

2 and 25,

5 and 10

500

Find the missing multiples. 

___, 14, 21, ___, 35, ___, ___, 56, ___, 70, ___ Show your work.

7 x 1= 7

7 x 2= 14 

7 x 3= 21 

7 x 4= 28

7 x 5= 35

7 x 6= 42

7 x 7= 49 

7 x 8 =56

7 x 9 =63

7 x 10= 70

7 x 11= 77