If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

To log in and use all the features of Khan Academy, please enable JavaScript in your browser.

Main content

Properties of numbers

Properties of numbers

Learn

Properties of addition

(Opens a modal)

Properties of multiplication

(Opens a modal)

Whole numbers & integers

Learn

Whole numbers & integers

(Opens a modal)

Least common multiple

Learn

Least common multiple

(Opens a modal)

Least common multiple: repeating factors

(Opens a modal)

Least common multiple of three numbers

(Opens a modal)

Least common multiple review

(Opens a modal)

Practice

Least common multipleGet 3 of 4 questions to level up!

Greatest common factor

Learn

Greatest common factor examples

(Opens a modal)

Greatest common factor explained

(Opens a modal)

Factor with the distributive property

(Opens a modal)

GCF & LCM word problems

(Opens a modal)

Greatest common factor review

(Opens a modal)

Practice

Greatest common factorGet 5 of 7 questions to level up!

Factor with the distributive property (no variables)Get 5 of 7 questions to level up!

GCF & LCM word problemsGet 5 of 7 questions to level up!

About this unit

Learn how to find the least common multiple (LCM) and greatest common factor (GCF).