Intro to GRE Math 5:21

Mental Math: GRE Estimation 4:50

Mental Math: Dividing by 5 2:49

Mental Math: Doubling and Halving 6:08

Mental Math: Squaring Shortcuts 12:26

Number Sense 10:41

The Use and Abuse of Formulas 2:52

Learn from Your Mistakes 4:43

Intro to Quantitative Comparison 13:29

QC Strategies - Estimation 10:40

QC Strategies - Matching Operations 7:53

Properties of Real Numbers 8:25

Positive and Negative Numbers - I 6:00

Mental Math, Addition, and Subtraction 6:19

Positive and Negative Numbers - II 10:10

Order of Operations 11:26

Intro to Decimals 11:28

Rounding 6:19

Multiples of 10 9:45

Intro to Fractions 11:10

Conversions: Fractions and Decimals 8:14

Fraction Properties - I 8:35

Comparing Fractions I 10:25

Comparing Fractions II (Advanced) 10:34

Operations with Fractions 8:22

Fraction Properties - II 7:57

Mixed Numerals and Improper Fractions 10:30

Operations with Proportions 6:36

Word Problems with Fractions 3:37

Intro to Percents 5:27

Working with Percents 3:35

Number Sense and Percents 4:23

Percent Increases and Decreases 10:35

Sequential Percent Changes 6:53

Simple and Compound Interest 13:59

Intro to Ratios 9:57

Combining Ratios 11:17

Ratios and Rates 6:15

Divisibility 10:10

Divisibility Rules 8:01

Multiples 9:54

Prime Numbers 6:28

Prime Factorization 8:17

Counting Factors of Large Numbers 12:15

Squares of Integers 5:30

Greatest Common Factor 5:57

Least Common Multiple 9:18

GCD LCM Formula 5:32

Even and Odd Integers 10:07

Testing Cases 6:02

Remainders 11:40

Integer Properties Strategies 6:33

Intro to Algebra 7:56

Simplifying Expressions 6:32

Multiplying Expressions 7:52

FOIL Method 8:50

Factoring - GCF 5:10

Factoring - Difference of Two Squares 12:01

Factoring - Quadratics 7:50

Factoring - Combined 4:25

Advanced Numerical Factoring 7:09

Factoring - Rational Expressions 5:11

Basic Equation Solving 6:19

Eliminating Fractions 9:11

Quadratic Equations 8:04

Two Equations, Two Unknowns - I 7:58

Two Equations, Two Unknowns - II 10:22

System - Number of Solutions 7:21

Three Equations with Three Unknowns 9:00

Absolute Value Equations 10:23

Function Notation 12:50

Strange Operators 7:46

Inequalities - I 13:55

Inequalities - II 11:07

Absolute Value Inequalities 9:35

Simplifying with Substitutions 5:26

Intro to Word Problems 1:37

Assigning Variables 9:14

Writing Equations 7:42

Number of Variables 8:23

Age Questions 5:02

Intro to Motion Questions 9:22

Average Speed 10:19

Multiple Traveler Questions 9:04

Shrinking and Expanding Gaps 12:00

Work Questions 9:34

Growth and Decay 4:01

Mixture Questions 10:00

Intro to Sets and Venn Diagrams 9:55

Double Matrix Method 9:23

Three Criteria Venn Diagrams 7:49

Intro to Sequences 7:48

Arithmetic Sequences 8:24

Recursive Sequences 10:23

Inclusive Counting 4:34

Sums of Sequences 7:32

Consecutive Integers 9:52

Backsolving 7:51

Picking Numbers 12:56

Intro to Exponents 9:09

Exponential Growth 8:39

Law of Exponents - I 12:46

Negative Exponents 11:02

Law of Exponents - II 10:42

Units Digit Questions 7:30

Square Roots 14:53

Other Roots 11:52

Properties of Roots 4:05

Simplifying Roots 7:53

Operations with Roots 12:41

Equations with Square Roots 9:43

Fractional Exponents 7:13

Exponential Equations 6:56

Rationalizing 13:54

Working with Formulas 10:25

Lines and Angles 16:06

Triangles - Part I 11:32

Assumptions & Estimation 7:31

Geometry Strategies - Part I 3:44

Triangles - Part II 14:54

Right Triangles 13:54

Similar Triangles 11:27

Special Right Triangles 11:59

Quadrilaterals 17:35

Area of Quadrilaterals 6:30

Polygons 7:30

Regular Polygons 7:08

Circles 6:03

Circle Properties 12:02

Circles, Arcs, and Sectors 6:39

Volume and Surface Area 12:15

Scale Factor and Scaling 8:21

Units of Measurement 8:05

Geometry Strategies - Part II 4:14

The Coordinate Plane 7:14

Graphing Lines 5:19

Vertical and Horizontal Lines 9:00

Slope 16:46

Intercepts 8:34

Slope-Intercept Form 7:55

Writing Equations of Lines 11:35

Distance Between Two Points 8:00

Reflections in the x-y Plane 9:39

Graphs of Quadratics 7:42

Mean, Median, Mode 9:32

More on Mean and Median 4:34

Weighted Averages I 7:00

Weighted Averages II (Advanced) 8:31

Range and Standard Deviation 16:06

More Standard Deviation 17:25

Normal Distribution 11:06

Quartiles and Boxplots 13:33

More on Boxplots 5:39

Percentiles 9:09

Introduction to Counting 4:22

Fundamental Counting Principle 7:39

FCP with Restrictions 4:36

Factorial Notation 4:05

Counting What You Don't Want 9:39

Counting with Identical Items 6:18

Eliminating Repetition 7:33

Combinations 7:49

When to Use Combinations 9:14

Calculating Combinations 10:02

Permutations and Combinations 7:53

Counting Strategies 3:17

Intro to Probability 5:59

Complementary Events and Simple Rules 3:22

Mutually Exclusive Events 2:33

Probability of Event A OR Event B 3:50

Examples of the OR Rule 2:02

Independent Events 6:26

Examples of the AND Rule 4:44

Generalized AND Rule 3:52

Examples of Generalized AND Rule 7:05

Binomial Situation 8:40

The "At Least" Scenario 6:25

Analyzing Questions 8:47

Using Counting Techniques 5:14

Listing vs Counting vs Probability Rules 6:31

General Probability Strategies 4:39

Guessing Strategies 5:50

Intro to Data Interpretation 2:12

Data Interpretation Strategy 8:56

Types of DI Graphics 12:13

Scatter Plots 10:10

Unconventional Graphs 10:32

QC Questions & Inequalities 12:55

QC Strategies - Picking Numbers 18:02

QC Questions & Algebra 10:25

QC Questions & Geometry 15:26

QC Questions & Integer Properties 9:59

Summary of QC Strategies 4:49