4.OA.4 Review

Front

What is a prime number?

Back

A prime number is a number that has only two factors: 1 and itself.

Front

What is a composite number?

Back

A composite number is a number that has more than two factors.

Front

List the first five prime numbers.

Back

2, 3, 5, 7, 11.

Front

What is the smallest prime number?

Back

The smallest prime number is 2.

Front

What is the definition of a multiple?

Back

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

Front

What are the multiples of 4?

Back

The multiples of 4 are 4, 8, 12, 16, 20, 24, etc.

Front

What are the multiples of 8?

Back

The multiples of 8 are 8, 16, 24, 32, 40, etc.

Front

What is the least common multiple (LCM) of 4 and 8?

Back

The least common multiple of 4 and 8 is 8.

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.

Front

What is the prime factorization of 16?

Back

The prime factorization of 16 is 2 x 2 x 2 x 2 (or 2^4).