Khan Academy on a Stick
Exponents, radicals, and scientific notation
Understanding and solving exponents without algebra.
The world of exponents
Addition was nice. Multiplication was cooler. In the mood for a new operation that grows numbers even faster? Ever felt like expressing repeated multiplication with less writing? Ever wanted to describe how most things in the universe grow and shrink? Well, exponents are your answer! This tutorial covers everything from basic exponents to negative and fractional ones. It assumes you remember your multiplication, negative numbers and fractions.

Understanding Square Roots
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Understanding Square Roots

Approximating Square Roots
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Approximating Square Roots
 Simplifying square roots

Simplifying radicals
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Using exponent rules to simplify radicals or square roots

Square Roots and Real Numbers
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Adding and simplifying radicals
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More Simplifying Radical Expressions
The square root
A strong contender for coolest symbol in mathematics is the radical. What is it? How does it relate to exponents? How is the square root different than the cube root? How can I simplify, multiply and add these things? This tutorial assumes you know the basics of exponents and exponent properties and takes you through the radical world for radicals (and gives you some good practice along the way)!

Finding Cube Roots
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Finding Cube Roots
 Cube root of a nonperfect cube

Simplifying a cube root
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Simplifying Radical Expressions1
The cube root
If you're familiar with the idea of a square root, we're about to take things one step (dimension?) further with the cube root. This generally refers to finding a number that ,when cubed, is equal to the number that you're trying to find the cube root of!
 Patterns in zeros exercise

Exponent Rules Part 1
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Introduction to exponent rules

Exponent Rules Part 2
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2 more exponent rules with an introduction to composite problems

Exponent Properties Involving Quotients
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Exponent Properties Involving Quotients
Exponent properties
Tired of hairy exponent expressions? Feel compelled to clean them up? Well, this tutorial might just give you the tools you need. If you know a bit about exponents, you'll learn a ton more in this tutorial as you learn about the rules for simplifying exponents.

Introduction to scientific notation
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Introduction to scientific notation. An indepth discussion about why and how scientific notation is used.

Scientific Notation
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Scientific Notation

Scientific Notation Examples
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More scientific notation examples

Scientific Notation I
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Scientific Notation I

Scientific Notation Example 2
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Scientific Notation 2

Multiplying in Scientific Notation
u11_l1_t4_we_int Multiplying in Scientific Notation

Multiplying in scientific notation example
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Multiplying in scientific notation example

Dividing in scientific notation example
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Example showing how to divide two numbers expressed in scientific notation
 Orders of magnitude exercise example 2
Scientific notation
Scientists and engineers often have to deal with super huge (like 6,000,000,000,000,000,000,000) and super small numbers (like 0.0000000000532) . How can they do this without tiring their hands out? How can they look at a number and understand how large or small it is without counting the digits? The answer is to use scientific notation. If you come to this tutorial with a basic understanding of positive and negative exponents, it should leave you with a new appreciation for representing really huge and really small numbers!
 Negative exponents

Negative Exponent Intuition
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Intuition on why a^b = 1/(a^b) (and why a^0 =1)

Zero, Negative, and Fractional Exponents
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Zero, Negative, and Fractional Exponents
 Basic fractional exponents
 Negative fractional exponent examples
 Negative fractional exponent examples 2
 Fractional exponents with numerators other than 1
Negative and fractional exponents
It's normally a bad idea to hang around with negative people or do negative things, but we think it's OK to associate with negative exponents. And fractional exponents are even more fun. This idea will open up entirely new vistas to your mathematical life.