prime and composite

Front

What are prime numbers?

Back

Prime numbers are numbers greater than 1 that have exactly 2 factors: 1 and themselves.

Front

What are composite numbers?

Back

Composite numbers are numbers greater than 1 that have more than 2 factors.

Front

How many factors do prime numbers have?

Back

Exactly 2 factors.

Front

Is the number 1 a prime number?

Back

No, 1 is not a prime number.

Front

Which of the following is a prime number: 2, 4, 6, 8?

Back

2 is a prime number.

Front

Which of the following is a composite number: 3, 5, 9, 11?

Back

9 is a composite number.

Front

True or False: All even numbers are composite.

Back

False, the number 2 is an even prime number.

Front

What is the smallest prime number?

Back

The smallest prime number is 2.

Front

List a prime number between 10 and 20.

Back

11, 13, 17, and 19 are prime numbers between 10 and 20.

Front

What is a factor?

Back

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