Factors, Multiples, Prime, and Composite

Front

What is a factor?

Back

A factor is a whole number that can be divided evenly into another number without leaving a remainder.

Front

What is a multiple?

Back

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

Front

What defines a prime number?

Back

A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself.

Front

What defines a composite number?

Back

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

Front

List the factors of 12.

Back

The factors of 12 are 1, 2, 3, 4, 6, and 12.

Front

List the first four multiples of 7.

Back

The first four multiples of 7 are 7, 14, 21, and 28.

Front

Is 1 a prime number? Why or why not?

Back

No, 1 is not a prime number because it does not meet the definition of having exactly two distinct positive divisors.

Front

What is the greatest common factor (GCF) of 12 and 15?

Back

The GCF of 12 and 15 is 3.

Front

What is the least common multiple (LCM) of 12 and 15?

Back

The LCM of 12 and 15 is 60.

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 by testing divisibility with prime numbers up to its square root.