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GRE Quant
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Arithmetic Foundation
(FREE)
Integers
(FREE)
Number Line Intro
(FREE)
Arithmetic Operations
(FREE)
Operations in Various Forms
(FREE)
Operations with Negatives
(FREE)
PEMDAS
(FREE)
# of Integers in Interval
(FREE)
Sum of Integers in Interval
(FREE)
Factors/Divisors
(FREE)
Nifty Factor-Finding System
(FREE)
Factors of Factorials
(FREE)
NON Factors of Factorials
(FREE)
Divisibility Rules (1, 2, 3, 4)
(FREE)
Even Versus Odd
(FREE)
Divisibility Rules (5, 6, 8, 9, 10)
(FREE)
The Strange Divisibility of 11
(FREE)
Is it Prime?
(FREE)
Greatest Common Factor (GCF)
(FREE)
Multiples
(FREE)
Least Common Multiple (LCM)
(FREE)
Adding Numbers to Multiples
(FREE)
# of Multiples in Interval
(FREE)
Sum of Multiples in Interval
(FREE)
Three Consecutive Integers I
(FREE)
Three Consecutive Integers II
(FREE)
# of Numbers in Factorials
(FREE)
# of Numbers in Factorials II
(FREE)
Trailing Zeros in Factorials
(FREE)
0 is Strange
(FREE)
TickBox Quiz #1
The Primes
Prime Factorization (PF)
Infinitude of Primes
Positive Factors with PF
Total Factors with PF
Odd Factors with PF
Even Factors with PF
GCF with PF
Shared Factors with PF
LCM with PF
(FREE)
Three Ringing Bells
Exponents and Unit Digits
Quotients and Remainders
Remainders Part Deux
Remainders and Exponents
Remainders and Addition
Fractions
Rational versus Irrational
Mixed Numbers
Adding/Subtracting Fractions
Multiplying Fractions
Dividing Fractions
Dividing by 1/Something
(FREE)
Decimals
Writing as Powers of 10
Terminating versus Non-Terminating
Repeating versus Non-Repeating
Does It Terminate?
Repeating Decimal to Fraction
Tickbox Quiz #2
Rational versus Irrational II
Rounding Decimals
Exponent Rules I
Exponent Rules II
Roots
Roots as Exponents
Roots as Exponents II
Roots and Negatives
Roots Rules
Simplifying Roots
Rationalizing Denominators
Real Numbers
The Number Line Revisited
Absolute Value
Real Number Properties I
Real Number Properties II
Real Number Properties III
Ratios
Ratios Can Be Tricky
Proportions
Cross Multiplication
Percents
Percents More than 100%
Calculating Percents
Percent Increase
Percent Decrease
Quick Percent Increase and Decrease
Percent of versus Percent More
Fraction/Decimal/Ratio/Percent
Tickbox Quiz #3
Algebra Foundation
Variables
Algebraic Expressions
Expressions Vocabulary
Polynomial Degree
Factoring Stuff Out
Operations with Expressions
FOIL (First, Outside, Inside, Last)
Algebraic Identities (1, 2, 3, 4, 5)
Algebraic Identities (6 and 7)
Simplifying Algebraic Expressions 1
Simplifying Algebraic Expressions 2
Exponent Rules Review
Common Exponent Mistakes
(FREE)
Two Nasty Exponent Mistakes
Introduction to Equations
Three Equation Rules
Equivalent Equations
Linear Equations
Tickbox Quiz #4
Solving 1-Variable Linear Equations
1-Variable Absolute Value
Are 2-Variable Equations Solvable?
System of Equations
Substitution Method
Elimination Method
System of Equations Shortcut
Quadratic Equations
The Quadratic Formula
The Discriminant (# of Solutions)
Factoring Quadratic Equations I
Factoring Quadratic Equations II
Absolute Value Quadratics
Completing the Square
Inequalities I
Inequalities II
Inequalities III
(FREE)
Functions 1
Tickbox Quiz #5
Functions 2
Domain & Range of Functions
Even & Odd functions
Words to Algebra I
Words to Algebra II
Words to Algebra III
Simple Interest
Compound Interest
Compound Interest II
Mixture Problems
The Mixture Trick
Distance = Rate x Time
Relative Speed
Work/Rate Problems
Working with your Bros
Identical Machines
Sometimes More is Bad
Working Against Each Other
Sequences I
Sequences II
Series I
Series II
Series III
Tickbox Quiz #6
Coordinate Geometry Foundation
The xy-coordinate Plane
Useful Vocabulary
Plotting Points
Quadrants
(FREE)
Reflections and Symmetry
Distance Between Two Points
Linear Equations on the Plane
Calculating Slope
A Very Special Slope
Reflections Across Lines
Review of Intercepts
Tickbox Quiz #7
A Very Important Equation
Finding the x-intercept
Parallel Lines
Perpendicular Lines
Systems of Equations
Linear Equation Problems I
Linear Equation Problems II
Inequalities on the Plane
Two Inequalities on the Plane
Quadratic Equations on the Plane
Tickbox Quiz #8
Graphing Quadratics by Factoring
Graphing by Completing the Square
Finding the Minimum Value
Discriminant and the Plane
Graphing Circles
Graphing Absolute Value Equations
Rotating 90°
Even and Odd Functions
Calculating Intersections
(FREE)
Graph Shifts
Tickbox Quiz #9
Geometry Foundation
Lines and Vocabulary
Lines and Angles
Perpendicular Angles (Right Angles)
Acute and Obtuse Angles
Angles and Parallel Lines
Polygons and Vocabulary
Degrees of a Triangle
(FREE)
Sum of Interior Angles
Interior Angle of Regular Polygon
Sum of Exterior Angles
Exterior Angle of Regular Polygon
Types of Triangles
Angle versus Side Length
Possible Side Lengths of Triangle
Area of a Triangle
When are Triangles Congruent?
The Pythagorean Theorem
Euclid's Proof of a² + b² = c²
(FREE)
Visual Proof of a² + b² = c²
Pythagorean Triplets
Are Pythagorean Triplets Infinite?
30-60-90 Triangles
Tickbox Quiz #10
45-45-90 Triangles
A Seemingly Impossible Problem
Area of Equilateral Triangle
Similar Triangles
Similar Triangle Problems I
Similar Triangle Problems II
Types of Quadrilaterals
Area of a Square/Rectangle
Area of a Parallelogram/Rhombus
A Seemingly Impossible Problem II
Area of Trapezoid
A Seemingly Impossible Problem III
It's All the Same Formula
Area of Regular Hexagon
Area of Other Regular Polygons
Maximizing a Polygon's Area
Max Area Regardless of Shape
Circles and Vocabulary
π (pi): The Magic Ratio
Simple π Calculations
Central Angle Theorem
Length of an Arc
Tickbox Quiz #11
Archimedes Calculates Pi (π)
Area of a Circle
Visual Proof of Area of Circle
Area of a Sector
Tangent Lines
Chord Problems
Inscribed/Circumscribed Polygons
Max Area of Inscribed Polygon
Inscribed Polygon Problems I
Inscribed Polygon Problems II
Concentric Circles
3D Figures
Volume of a Cube
Surface Area of a Cube
Volume of a Rectangular Solid
Surface Area of a Rectangular Solid
Volume of Right Cylinder
Surface Area of Right Cylinder
Surface Area/Volume Relationship
Longest Diagonal of Cube
Longest Diagonal of Rectangular Solid
Tickbox Quiz #12
Data Analysis Foundation
Ways to Present Data I
Ways to Present Data II
Measures of Central Tendency
Mean/Average
Some Mean/Average Problems
Median
Some Median Problems
Mode
(FREE)
Mean and Median's Relationship
Mean/Median/Mode Problems
Weighted Mean
Weighted Mean Problems
Measures of Position
Quartiles
Percentiles
Measures of Dispersion
Range
Outliers
Interquartile Range
Boxplots
Standard Deviation (SD)
Eyeballing Standard Deviation
Calculating SD (simple cases)
Tickbox Quiz #13
Calculating SD (complex cases)
Population vs Sample SD
What happens to SD when...
Standardization
Sets versus Lists
Set Intersections
Set Unions
Mutually Exclusive Sets
Complete Overlap
Inclusion-Exclusion Principle
Venn Diagram vs Table vs Formula
Three Overlapping Sets
Multiplication: The "Choice" Method
Introduction to Combinatorics
Permutations
Permutations with Restrictions
Permutations with Repeats
A Very Interesting Problem
Permutations in a Circle
Combinations
(FREE)
Don't Play the Lottery
The Combinations Pattern
Permutations or Combinations?
Tickbox Quiz #14
Introduction to Probability
(FREE)
Probability as Area
Independent Events
Mutually Exclusive Events
Probability with Venn Diagrams
A AND B (Independent)
A AND B (Mutually Exclusive)
A OR B (Independent)
A OR B (Mutually Exclusive)
The Extremes of Probability
Probability and Combinatorics Combined
At LEAST/MOST Questions
Given Probability
Expected Value
Play the Lottery
The Birthday Paradox
Distributions of Data
Skewness
The Normal Distribution
Effect on Normal Distribution
Normal Distribution Calculations
Tickbox Quiz #15
Quantitative Strategy
Making Deductions 1
Making Deductions 2
Making Deductions 3
(FREE)
Choosing Numbers
Common Numbers to Choose
Choosing Smart Numbers
When to Stop Choosing?
Backsolving
Piece by Piece
Simplifying QC Answer Choices
Manipulating QC Answer Choices
Simplify and Manipulate
Equal / Not Equal
(FREE)
Pattern Recognition I
Pattern Recognition II
Brute Force
Calculating Extremes I
Calculating Extremes II
Have a System
Create Easier Example
Plug and Chug
The Three Skipping Periods
MUST problems
CANNOT Problems
CAN/COULD Problems
Sufficient Information Problems
Math is Pretty Cool (Optional)
A Caveman Learns Math I
A Caveman Learns Math II
A Caveman Learns Math III