Prime and composite

Front

What is a prime number?

Back

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

Front

List the first five prime numbers.

Back

2, 3, 5, 7, 11.

Front

Is 1 a prime number?

Back

No, 1 is not a prime number.

Front

What is the smallest prime number?

Back

The smallest prime number is 2.

Front

What is the largest two-digit prime number?

Back

The largest two-digit prime number is 97.

Front

How can you tell if a number is prime?

Back

A number is prime if it cannot be divided evenly by any other numbers except for 1 and itself.

Front

What is a factor?

Back

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

Front

What is the prime factorization of 12?

Back

The prime factorization of 12 is 2 x 2 x 3.

Front

Is 9 a prime or composite number?

Back

9 is a composite number because it has factors 1, 3, and 9.