Common Factors

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 the greatest common factor (GCF)?

Back

The greatest common factor (GCF) of two or more numbers is the largest number that divides all of them without leaving a remainder.

Front

List the factors of 18.

Back

The factors of 18 are 1, 2, 3, 6, 9, and 18.

Front

How do you find the factors of a number?

Back

To find the factors of a number, divide the number by integers starting from 1 up to the number itself and check which divisions result in whole numbers.

Front

What is the GCF of 30 and 36?

Back

The GCF of 30 and 36 is 6.

Front

How many factors does the number 25 have?

Back

The number 25 has 3 factors: 1, 5, and 25.

Front

What are the factor pairs of 15?

Back

The factor pairs of 15 are (1, 15), (3, 5).

Front

What is the relationship between factors and multiples?

Back

Factors are numbers that divide another number evenly, while multiples are the result of multiplying a number by an integer.

Front

What is a prime factor?

Back

A prime factor is a factor that is a prime number, meaning it has no positive divisors other than 1 and itself.

Front

How can you determine if a number is prime?

Back

A number is prime if it has exactly two distinct positive divisors: 1 and itself.