Prime & Composite Practice

Prime or Composite

100

Is the number 7 prime or composite?

Prime

200

Is the number 12 prime or composite?

Composite

300

Which prime number comes right after 17?

19

400

What are the TWO composite numbers between 30 and 40 that are divisible by 3?

33 and 36

500

What are all the prime numbers between 40 and 50?

41, 43, and 47

Prime Facts

100

What is the SMALLEST prime number

2

200

What is the LARGEST prime number less than 20?

19

300

A prime number has exactly how many factors?

2

400

What is the largest 1-digit number?

7

500

Name three prime numbers that are also less than 15?

2,3,5,7,11, or 13

Composite Facts

100

What is the smallest composite number?

4

200

What is the smallest 2-digit composite number?

10

300

Is the number 21 prime or composite?

Composite

400

This composite number is the sum of 7 and 8?

15

500

I am composite number between 50 and 60. My factors include 2,3, and 5. What number am I?

54

Factors

100

Besides 15 and 1, name another factor of 15?

3 and 5

200

Other than 1 and 12, name another factor of 12?

3 and 4

300

The definition of a factor?

Is a number that can be multiplied by another number to make a given number.

400

Name all the factors of 27.

1, 3, 9, and 27

500

How do we know if 2 is a factor of a number?

If a number is even then it will be divisible by 2.