Prime/Composite Numbers

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.

Tags

CCSS.4.OA.B.4

Front

What is a composite number?

Back

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

Tags

CCSS.4.OA.B.4

Front

Is the number 1 considered a prime or composite number?

Back

Neither; 1 is not considered a prime or composite number.

Tags

CCSS.4.OA.B.4

Front

What is the smallest prime number?

Back

The smallest prime number is 2.

Tags

CCSS.4.OA.B.4

Front

What is the smallest composite number?

Back

The smallest composite number is 4.

Tags

CCSS.4.OA.B.4

Front

How can you determine if a number is prime?

Back

To determine if a number is prime, check if it has any divisors other than 1 and itself.

Tags

CCSS.4.OA.B.4

Front

What is a factor?

Back

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

Tags

CCSS.4.OA.B.4

Front

List three prime numbers between 1 and 20.

Back

2, 3, 5, 7, 11, 13, 17, 19.

Tags

CCSS.4.OA.B.4

Front

List three composite numbers between 1 and 20.

Back

4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20.

Tags

CCSS.4.OA.B.4

Front

True or False: All even numbers are composite.

Back

False; the number 2 is an even prime number.

Tags

CCSS.4.OA.B.4