# Pre-algebra

The foundations of Pre-Algebra from The Khan Academy.
• Lectures 23
• Video 4 Hours
• Skill level all level
• Languages English
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### Course Description

Videos on pre-algebra. You should be ready for the Algebra playlist if you understand everything here.

### What am I going to get from this course?

• Over 23 lectures and 3.5 hours of content!

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### Curriculum

 1 09:15 Adding and subtracting negative numbers 2 08:28 Multiplying and dividing negative numbers 3 09:48 How to add and subtract fractions. 4 08:25 Multiplying fractions 5 08:58 Dividing fractions 6 09:40 Order of Operations 7 05:20 More Complicated Order of Operations Example 8 09:45 Basic Exponents 9 06:25 negative exponents 10 09:11 fractional exponents 11 04:38 Intuition on why a^-b = 1/(a^b) (and why a^0 =1) 12 09:43 Introduction to exponent rules 13 07:43 2 more exponent rules with an introduction to composite problems 14 09:43 Using exponent rules to simplify radicals or square roots 15 09:47 An introduction to logarithms 16 09:16 Metric unit conversion 17 09:55 Translating speed units 18 09:14 Introduction to the first two logarithm properties. 19 10:04 Second part of the introduction to logarithm properties. 20 20:48 Introduction to Scientific Notation 21 12:49 More scientific notation examples 22 14:13 What a ratio is. Simple ratio problems. 23 10:44 Unit Conversion Example: Drug Dosage

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### Reviews

Average Rating
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• Brian Marcin

#### Sal Rules!

This was a great course, I used it to refresh myself for a college placement test. Sal gives the lectures and examples in a way that doesn't make it boring or monotonous and commits it to memory. I think I will do well, thanks to Sal!