All numbers where the digit sum is divisible by 3 are divisible by 3. For example, 54 is divisible by 3 because 5 + 4 = 9 and 9 is divisible by 3.

A factor tree is a great tool you can use to factorize numbers. The times tables are an important element in this process. Learn more by watching this video!

How Do You Factorize with a Factor Tree?  

Practice using a factor tree to factorize numbers on the next page.

Integer greater than 1 that is only divisible by 1 and itself.

An integer greater than 1 that is the product of two or more prime numbers.

Every number in a multiplication problem that is multiplied is called a factor.

The result of multiplying numbers together.

Mathagon

Using Prime Numbers 

Factoring Trees

Division Method

Factorizing Negative Numbers

When you factorize a number, you calculate backwards, starting with the product and finding all the factors. Watch this video to learn why you need this skill. 

Learn what factorization is, why it is important, and how to factorize a number into prime numbers using the division method or a factor tree.

Factorization of Numbers

How Do You Use Prime Numbers in Factorization?  

Prime numbers are a very important element in the process of factorization. Discover the relationship between prime numbers and factorization here.

Solve math problems, activities and exercises related to "How Do You Use Prime Numbers in Factorization?".

How Do You Use Prime Numbers in Factorization?

Solve math problems, activities and exercises related to "How Do You Factorize with a Factor Tree?".

How Do You Factorize with a Factor Tree?

How Do You Factorize a Number with the Division Method? 

One very useful method of factorization is known as the division method. This video presents examples and visualizations to help you learn the process.

Solve math problems, activities and exercises related to "How Do You Factorize a Number with the Division Method?".

How Do You Factorize a Number with the Division Method?

You factorize negative numbers using the same methods you learned for positive numbers. But there is one extra step which you will learn in this video

Solve math problems, activities and exercises related to "How Do You Factorize Negative Numbers?".