Prime and Composite Numbers Flashcard

Front

What is a prime number?

Back

A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself.

Front

What is a composite number?

Back

A composite number is a natural number greater than 1 that has more than two positive divisors.

Front

Is 1 a prime number?

Back

No, 1 is not a prime number.

Front

Which of the following numbers is prime: 24, 17, 4, 1?

Back

17 is a prime number.

Front

Which one is NOT a factor of 12: 2, 3, 6, 8?

Back

8 is NOT a factor of 12.

Front

Which of the following numbers is prime: 22, 1, 7, 12?

Back

7 is a prime number.

Front

Which of the following numbers is composite: 13, 7, 10, 29?

Back

10 is a composite number.

Front

Which one is a factor of 20: 3, 4, 6, 8?

Back

4 is a factor of 20.

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 composite number?

Back

The smallest composite number is 4.