Prime and composite

Front

What is a prime number?

Back

A prime number is a whole 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 whole number greater than 1 that has more than two positive divisors.

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

List the first five prime numbers.

Back

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

Tags

CCSS.4.OA.B.4

Front

List the first five composite numbers.

Back

The first five composite numbers are 4, 6, 8, 9, and 10.

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

What is a multiple?

Back

A multiple of a number is the product of that number and an integer.

Front

Is 15 a prime number?

Back

No, 15 is a composite number because it has factors other than 1 and itself (1, 3, 5, 15).

Tags

CCSS.4.OA.B.4

Front

Is 17 a prime number?

Back

Yes, 17 is a prime number because its only factors are 1 and 17.

Tags

CCSS.4.OA.B.4