#### Lec 1 - Negative Numbers Introduction

Negative Numbers Introduction

#### Lec 4 - Dividing fractions

Dividing fractions Dividing fractions

#### Lec 5 - Introduction to Order of Operations

Introduction to Order of Operations Order of Operations

#### Lec 6 - More Complicated Order of Operat ...

More Complicated Order of Operations Example More Complicated Order of Operations Example

#### Lec 7 - Level 1 Exponents

Level 1 Exponents Basic Exponents

#### Lec 8 - Level 2 Exponents

Level 2 Exponents negative exponents

#### Lec 9 - Level 3 exponents

Level 3 exponents fractional exponents

#### Lec 10 - Negative Exponent Intuition

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

#### Lec 11 - Exponent Rules Part 1

Exponent Rules Part 1 Introduction to exponent rules

#### Lec 12 - Exponent Rules Part 2

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

#### Lec 14 - Introduction to Logarithms

Introduction to Logarithms- An introduction to logarithms

#### Lec 15 - Unit conversion

Unit conversion Metric unit conversion

#### Lec 16 - Speed translation

Speed translation Translating speed units

#### Lec 17 - Introduction to logarithm prope ...

Introduction to logarithm properties Introduction to the first two logarithm properties.

#### Lec 18 - Introduction to logarithm prope ...

Introduction to logarithm properties (part 2) Second part of the introduction to logarithm properties.

#### Lec 19 - Scientific Notation (old)

Scientific Notation (old) Introduction to Scientific Notation

#### Lec 20 - Scientific Notation Examples

Scientific Notation Examples More scientific notation examples

#### Lec 21 - Introduction to Ratios (new HD ...

Introduction to Ratios (new HD version) What a ratio is. Simple ratio problems.

#### Lec 22 - Unit Conversion Example: Drug D ...

Unit Conversion Example: Drug Dosage Unit Conversion Example: Drug Dosage

#### Lec 23 - Common Divisibility Examples

Common Divisibility Examples Common Divisibility Examples

#### Lec 24 - Binary Numbers

Binary Numbers Understanding how numbers are represented. Introduction to binary numbers

#### Lec 25 - Binary, Decimal and Hexadecimal ...

Binary, Decimal and Hexadecimal Number Systems Conceptualizing different number systems

#### Lec 26 - Number Base Conversion Practice

Number Base Conversion Practice Converting between decimal, binary and hexadecimal number systems

#### Lec 27 - Significant Figures

Significant Figures Introduction to significant figures

#### Lec 28 - More on Significant Figures

More on Significant Figures Understanding the "rules of thumb" for significant figures

#### Lec 29 - Multiplying and Dividing with S ...

Multiplying and Dividing with Significant Figures Multiplying and dividing with significant figures

#### Lec 30 - Addition and Subtraction with S ...

Addition and Subtraction with Significant Figures Addition and Subtraction with Significant Figures

#### Lec 31 - Pure Numbers and Significant Digits

Pure Numbers and Significant Digits Pure Numbers and Significant Digits

#### Lec 32 - Ordering Negative Numbers

Ordering Negative Numbers Ordering negative numbers from least to greatest

#### Lec 33 - Comparing Absolute Values

Comparing Absolute Values Evaluating and comparing absolute values

#### Lec 34 - Ordering Fractions

Ordering Fractions Finding common denominators of multiple fraction to order them

#### Lec 35 - Inverse Property of Multiplication

Inverse Property of Multiplication Simple idea that multiplying by a numbers multiplicative inverse gets you back to one

#### Lec 36 - Inverse Property of Addition

Inverse Property of Addition The simple idea that a number plus its negative is 0

#### Lec 37 - Interpreting Linear Graphs

Interpreting Linear Graphs Interpreting Linear Graphs

#### Pre-algebra

Source of these courses is khan
This is Pre-algebra course from Khan University. These lectures show example problems from random math competitions videos on pre-algebra. Should be ready for the "Algebra" playlist if you understand everything here.
khan  Website: http://www.dnatube.com/school/khan

#### khan

Videos are obtained from khan
COURSE NAME: Pre-algebra