Factors and Multiples

Front

What are factors?

Back

Factors are numbers that can be multiplied together to get another number. For example, the factors of 12 are 1, 2, 3, 4, 6, and 12.

Front

What are multiples?

Back

Multiples are numbers that can be divided by a certain number without leaving a remainder. For example, the multiples of 3 are 3, 6, 9, 12, 15, etc.

Front

What is a composite number?

Back

A composite number is a whole number greater than 1 that has more than two factors. For example, 36 is composite because it has factors 1, 2, 3, 4, 6, 9, 12, 18, and 36.

Front

What is a prime number?

Back

A prime number is a whole number greater than 1 that has exactly two factors: 1 and itself. For example, 11 is prime because its only factors are 1 and 11.

Front

What are the factors of 16?

Back

The factors of 16 are 1, 2, 4, 8, and 16.

Front

Which numbers are multiples of 5?

Back

The multiples of 5 include 5, 10, 15, 20, 25, etc.

Front

How do you find the factors of a number?

Back

To find the factors of a number, list all the pairs of numbers that multiply together to give that number.

Front

What is the least common multiple (LCM)?

Back

The least common multiple (LCM) of two numbers is the smallest number that is a multiple of both. For example, the LCM of 4 and 5 is 20.

Front

What is the greatest common factor (GCF)?

Back

The greatest common factor (GCF) of two numbers is the largest number that divides both of them without leaving a remainder. For example, the GCF of 12 and 16 is 4.

Front

What are the multiples of 7?

Back

The multiples of 7 include 7, 14, 21, 28, 35, etc.