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.

Main content

Unit 6: Decimals

About this unit

In this topic, we will learn what a decimal is and how to show it visually and on a number line. We will also add, subtract, multiply, and divide with decimals.

Intro to decimals

Learn

Practice

Decimal place value intro

Learn

Practice

Quiz 1

Identify your areas for growth in these lessons:
Intro to decimals
Decimal place value intro

Decimals on the number line

Learn

Practice

Rewriting decimals as fractions

Learn

Practice

Quiz 2

Identify your areas for growth in these lessons:
Decimals on the number line
Rewriting decimals as fractions

Adding decimals

Learn

Practice

Adding decimals: standard algorithm

Learn

Practice

Quiz 3

Identify your areas for growth in these lessons:
Adding decimals
Adding decimals: standard algorithm

Subtracting decimals

Learn

Practice

Subtracting decimals: standard algorithm

Learn

Practice

Adding and subtracting decimals word problems

Learn

Practice

Quiz 4

Identify your areas for growth in these lessons:
Subtracting decimals
Subtracting decimals: standard algorithm
Adding and subtracting decimals word problems

Multiplying decimals

Learn

Practice

Multiplying decimals: standard algorithm

Learn

Practice

Quiz 5

Identify your areas for growth in these lessons:
Multiplying decimals
Multiplying decimals: standard algorithm

Dividing decimals

Learn

Practice

Dividing decimals: standard algorithm

Learn

Practice

Quiz 6

Identify your areas for growth in these lessons:
Dividing decimals
Dividing decimals: standard algorithm

Significant figures

Learn

Practice

Unit test

Test your understanding of Decimals with these %(num)s questions.