Prime and Composite

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

Is 49 prime or composite?

Back

49 is composite because it has 3 factors: 1, 7, and 49.

Front

Which list has only prime numbers? 2, 3, 4, 5, 1, 5, 7, 9, 2, 3, 5, 7, 2, 4, 6, 8

Back

The list with only prime numbers is: 2, 3, 5, 7.

Front

Which number below is NOT prime? 3, 7, 9, 11

Back

9 is NOT a prime number.

Front

What are the first five prime numbers?

Back

The first five prime numbers are 2, 3, 5, 7, and 11.

Front

What is the smallest prime number?

Back

The smallest prime number is 2.

Front

Can a prime number be even?

Back

Yes, the only even prime number is 2.

Front

What is a factor?

Back

A factor is a number that divides another number without leaving a remainder.

Front

How many factors does the number 1 have?

Back

The number 1 has ONLY one factor: itself.