Review 2: Factors, GCF, Prime and Composite Numbers

Review 2: Factors, GCF, Prime and Composite Numbers

Let's get ready to review more about Unit 2.

Open Ended

List all the factors of 14:

Open Ended

The factors of 18 are: 1, 2, 3, 6, 9, 18.

The factors of 21 are: 1, 3, 7, 21.

What are the common factors between 18 and 21?

Multiple Choice

What is the GCF between 9 and 27.

• 9

• 3

• 27

• 1

Open Ended

1. List the factors of 20.

2. List the factors of 12.

3. What are the common factors between 20 and 12?

4. What is the GCF between 20 and 12?

Multiple Choice

19 is a

• prime number

• composite number

Multiple Choice

21 is a

• prime number

• composite number

Multiple Choice

9 is a

• prime number

• composite number

Multiple Choice

31 is a

• prime number

• composite number

Open Ended

Make a list of 5 prime numbers

Open Ended

Make a list of 5 composite numbers