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

Unit: Arithmetic operations with rational numbers

0

Possible mastery points

Adding decimals

Learn

Practice

Adding decimals: thousandthsGet 5 of 7 questions to level up!

Subtracting decimals

Learn

Practice

Subtracting decimals: thousandthsGet 5 of 7 questions to level up!

Adding and subtracting decimals word problems

Learn

Practice

Adding & subtracting decimals word problemsGet 3 of 4 questions to level up!

Quiz 1

Level up on the above skills and collect up to 240 Mastery points

Multiplying decimals

Learn

Practice

Decimal multiplication place valueGet 3 of 4 questions to level up!
Multiplying decimals like 0.847x3.54 (standard algorithm)Get 3 of 4 questions to level up!

Quiz 2

Level up on the above skills and collect up to 160 Mastery points

Dividing whole numbers

Learn

Practice

Division by 2-digitsGet 3 of 4 questions to level up!
Multi-digit divisionGet 3 of 4 questions to level up!

Dividing decimals

Learn

Practice

Dividing whole numbers like 56÷35 to get a decimalGet 5 of 7 questions to level up!
Dividing decimals: hundredthsGet 3 of 4 questions to level up!
Dividing decimals: thousandthsGet 3 of 4 questions to level up!

Quiz 3

Level up on the above skills and collect up to 400 Mastery points

Dividing fractions by fractions

Learn

Practice

Divide fractions by whole numbersGet 3 of 4 questions to level up!
Divide whole numbers by fractionsGet 3 of 4 questions to level up!
Dividing fractionsGet 3 of 4 questions to level up!
Divide mixed numbersGet 3 of 4 questions to level up!
Interpret fraction divisionGet 3 of 4 questions to level up!
Dividing fractions word problemsGet 5 of 7 questions to level up!

Quiz 4

Level up on the above skills and collect up to 480 Mastery points

Up next for you:

Unit test

Level up on all the skills in this unit and collect up to 1600 Mastery points!

About this unit

The most fundamental branch of math is arithmetic operations. It consists of adding, subtracting, multiplying, and dividing numbers. We're willing to bet that doing these operations on whole numbers is a piece of cake, but now we'll mix those numbers up with decimals and fractions. So sharpen that pencil and relax in your chair, we're going for a ride!