This video defines rational numbers. Through the definition and examples, learners should comprehend that irrational numbers are numbers that cannot become simple fractions. The video uses examples of very common irrational numbers, such...

The formula for the volume of a sphere is - volume equals four thirds pi times the radius cubed. That's a mouth-full. But if you are given the radius value of the sphere, all you have to do is plug it in and do the arithmetic. Just...

How do you find the area of a sector of a circle? Use the formula of course. Then all you have to do is plug in the given values and do the math. Make sure you are following the rules of order of operation. The instructor will walk you...

Irrational, rational, and terminating numbers are all covered in this math tutorial. The instructor uses a question from a math test to work through, showing how to compute and evaluate each answer to determine if the number given in...

A real number is any number that you can find on a number line. This includes rational and irrational numbers, which means positive numbers, negative numbers, decimal numbers, square root numbers and even pi.

This video defines rational numbers. Through the definition and examples, learners should comprehend that irrational numbers are numbers that cannot become simple fractions. The video uses examples of very common irrational numbers, such...

The teacher defines and writes a list of the different categories of numbers. But sometimes it's hard to keep all that organized. So she draws a diagram and explains further how the categories of numbers compare or relate to each other....

The formula for the volume of a sphere is volume equals four-thirds pi times the radius cubed. That's a mouth-full. But if you are given the radius value of the sphere, all you have to do is plug it in and do the arithmetic. Just...

What do a basketball, a bowling ball, and a ping pong ball all have in common? They are spheres. So how do you measure the surface area of a sphere? Yes, there is a formula and all you have to do is know one measurement of the sphere to...

Real numbers are numbers that can be found on the number line and can be either a rational or irrational number. This tutorial explains real numbers and gives some examples. [2:57]

Video exploring number theory concepts such as real, hyperreal, and surreal numbers, and infinity. [10:01]

In this video tutorial, Professor Perez uses a real number line to demonstrate integers, natural numbers, rational and irrational numbers, and whole numbers. [8:17]

Professor Perez's virtual classroom takes a look at the properties of real numbers: associative, commutative, distributive, identity, and inverse. [9:59]

Watch this video to learn what makes up a complex number, as well as how to plot on a complex plane. [5:45]

This lesson demonstrates how to multiply rational numbers using algebraic notation. It is 4 of 6 in the series titled "Multiplying Rationals."

This lesson demonstrates how to multiply rational numbers using algebraic notation. It is 5 of 6 in the series titled "Multiplying Rationals."

This lesson demonstrates how to multiply rational numbers using algebraic notation. It is 6 of 6 in the series titled "Multiplying Rationals."

This lesson demonstrates how to multiply rational numbers using algebraic notation. It is 1 of 6 in the series titled "Multiplying Rationals."

Video exploring number theory concepts such as real, hyperreal, and surreal numbers, and infinity.

Multi-step inequalities with real number solution sets are investigated in this video lesson. The tutorial includes detailed examples.

This resource provides a short video about finding absolute value.