Prime Numbers

Front

What are prime numbers divisible by?

Back

1 and itself.

Tags

CCSS.4.OA.B.4

Front

Why is 1 neither prime nor composite?

Back

It only has one factor.

Tags

CCSS.4.OA.B.4

Front

Which of the following is not a prime number: 87, 29, 31?

Back

87.

Tags

CCSS.4.OA.B.4

Front

Which one of the following is not a prime number: 27, 19, 23?

Back

27.

Tags

CCSS.4.OA.B.4

Front

Is 29 prime or composite?

Back

Prime.

Tags

CCSS.4.OA.B.4

Front

What is the definition of 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

List the first five prime numbers.

Back

2, 3, 5, 7, 11.

Tags

CCSS.4.OA.B.4

Front

What is the smallest prime number?

Back

2.

Tags

CCSS.4.OA.B.4

Front

Can a prime number be even? If so, which one?

Back

Yes, the only even prime number is 2.

Tags

CCSS.4.OA.B.4

Front

What is a composite number?

Back

A composite number is a natural number greater than 1 that is not prime, meaning it has more than two positive divisors.

Tags

CCSS.4.OA.B.4