Learn the difference between rational and irrational numbers, learn how to identify them, and discover why some of the most famous numbers in mathematics, like Pi and e, are actually …

Practice Compare rational numbers using a number line Get 3 of 4 questions to level up!

What about fractions mixed with decimals? When working with a mix of fractions and decimals, convert the numbers based on the format of the choices.

What does it mean for a number to be irrational? Let's find out. The answer may surprise you.

Practice Up next for you: Missing numbers on the number line Get 3 of 4 questions to level up!

What you will learn in this lesson This lesson will introduce you to rational expressions. You will learn how to determine when a rational expression is undefined and how to find its domain.

When a number is raised to a negative, the base becomes its reciprocal, which I explained earlier. When flipping the number, the negative sign in the exponent goes away.

It consists of adding, subtracting, multiplying, and dividing numbers. By this point, performing these operations on whole numbers might be a piece of cake, but now we'll mix those …

Practice Closure, associative and commutative property of rational numbers (1/2) Get 3 of 4 questions to level up!

We can write any rational number as the ratio of two integers. We cannot write irrational numbers, such as the square root of 8 and pi, in this way. Learn other forms, such as decimals, in which …