# Solve real-world and mathematical problems involving the four operations with rational numbers.

### Popular Tutorials in Solve real-world and mathematical problems involving the four operations with rational numbers.

#### What are the Multiplication Properties of 0 and -1?

Understanding the multiplication properties of 0 and -1 are fundamental building blocks in learning all there is to know about the operation of multiplication. In this tutorial, you'll learn about these two important properties.

#### What are the Inverse Properties of Addition and Multiplication?

Inverse properties of addition and multiplication got you stumped? This tutorial should help! Check it out and learn these two important inverse properties.

#### How Do You Subtract Fractions with Different Denominators?

Subtracting fractions with unlike denominators doesn't have to be a nightmare. Just find a common denominator and everything calms down! See how to keep your fraction subtraction calm with this tutorial.

#### How Do You Subtract Fractions with the Same Denominator?

Subtracting fractions with like denominators? Just subtract the numerators and put the result over the common denominator! To see this process in action, check out this tutorial!

#### How Do You Multiply Fractions?

Working with fractions can be intimidating, but if you arm yourself with the right tools, you'll find that working with fractions is no harder than working with basic numbers. In this tutorial you'll see the process for multiplying 3 very simple fractions. Enjoy!

#### How Do You Add Fractions with Different Denominators?

Trying to add fractions with unlike denominators? You're going to need a common denominator first! Follow along with this tutorial and see what you need to do to add these fractions together.

#### How Do You Multiply a Whole Number by a Fraction?

Multiplying a whole number and a fraction can be confusing, but this tutorial helps to sort things out. Check it out!

#### How Do You Figure Out the Sign of a Product or Quotient?

Multiplying and dividing numbers takes a good amount of thinking, and it's easy to make a mistake. But you can make sure that you're on the right track if you check whether the answer should be positive or negative. In this tutorial you'll see exactly how to tell if your answer will be positive or negative, even if you don't know the exact value of the answer. That way you'll always be able to check your answers!

#### How Do You Add Fractions with the Same Denominator?

While adding fractions can be hard, adding fractions with the same denominator is just as easy as adding numbers. That's why when you add fractions you first get all of them to have the same denominator, and then add them up. In this tutorial you get to see just how easy it is to add up fractions once they have the same denominator!

#### How Do You Simplify a Fraction Over a Whole Number?

Complex fractions are, well, complex. But if you watch this tutorial, you'll see how to make these complex fractions much simpler!

#### What's a Complex Fraction?

Ever wondered what makes complex fractions so complex? Check out this video tutorial and wonder no more :)

#### What's the Reciprocal Rule of Division?

When you divide fractions, the trick is to rewrite division as a multiplication. But the truth is that you can always rewrite division as a multiplication, and in this tutorial you'll see the rule that makes that possible!

#### How Do You Simplify a Fraction Over a Fraction?

Complex fractions can be pretty complex. Luckily, you can simplify a complex fraction to make it much easier to work with. See how in this tutorial!

#### How Do You Rewrite Subtraction as Addition?

Subtracting a positive is the same thing as adding a negative. Subtracting a negative is the same as adding a positive. Get a closer look with this tutorial!

#### How Do You Subtract Decimals?

Doing math with paper and pencil can come in real handy, so make sure you're comfortable subtracting decimals by hand. After all, you don't want the calculator to be a crutch!

#### How Do You Add Decimals?

Doing math with paper and pencil can come in real handy, so make sure you're comfortable adding decimals by hand. After all, you don't want the calculator to be a crutch!

#### How Do You Multiply Decimals?

Doing math with paper and pencil can come in real handy, so make sure you're comfortable multiplying decimals by hand. After all, you don't want the calculator to be a crutch!

#### How Do You Divide Fractions?

Dividing fractions? Change that division to a multiplication by multiplying the dividend by the reciprocal of the divisor. Learn all about it by watching this tutorial!