Prime and Composite Numbers

Front

What is a prime number?

Back

A prime number is a number that has only two factors: 1 and itself.

Front

What is a composite number?

Back

A composite number is a number that has more than two factors.

Front

Which number is NOT a factor of 18? 2, 3, 5, 9

Back

5 is NOT a factor of 18.

Front

List all the prime numbers between 1 and 10.

Back

The prime numbers between 1 and 10 are 2, 3, 5, 7.

Front

What are the factors of 27?

Back

The factors of 27 are 1, 3, 9, 27.

Front

True or False: All even numbers are prime numbers.

Back

False. (The only even prime number is 2.)

Front

What is the smallest prime number?

Back

The smallest prime number is 2.

Front

What is the largest single-digit prime number?

Back

The largest single-digit prime number is 7.

Front

How many factors does a prime number have?

Back

A prime number has exactly two factors.

Front

How many factors does a composite number have?

Back

A composite number has more than two factors.