Factors and Multiples

Front

What is a multiple of a number?

Back

A multiple of a number is the product of that number and an integer. For example, multiples of 5 include 5, 10, 15, 20, etc.

Front

What is a factor of a number?

Back

A factor of a number is an integer that can be multiplied by another integer to produce that number. For example, factors of 12 include 1, 2, 3, 4, 6, and 12.

Front

How do you find the least common multiple (LCM) of two numbers?

Back

To find the LCM of two numbers, list the multiples of each number and find the smallest multiple that appears in both lists.

Front

What is the greatest common factor (GCF) of two numbers?

Back

The GCF of two numbers is the largest integer that divides both numbers without leaving a remainder.

Front

What is 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

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.

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 are the first five multiples of 7?

Back

The first five multiples of 7 are 7, 14, 21, 28, and 35.

Front

List all the factors of 16.

Back

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

Front

What is the least common multiple of 5 and 6?

Back

The least common multiple of 5 and 6 is 30.