## Khan Academy GRE Prep

Introduction to fractions

Identifying Fraction Parts

Recognizing fractions exercise

Numerator and Denominator of a Fraction

Plotting basic fractions on the number line

Fraction word problems 1 exercise

Exponentiation warmup

Introduction to exponents

Understanding Exponents 2

Understanding Exponents

Raising a number to the 0th and 1st power

Powers of 1 and -1

Powers of fractions

Powers of zero

Decimal Place Value

Decimal Place Value 2

Writing out a decimal in words

Expanding out a decimal by place value

Writing a decimal to represent a quantity

Comparing place values in decimals

Understanding decimal place value exercise

Number Sets 1

Number Sets 2

Number Sets 3

Introduction to Ratios (new HD version)

Ratios as Fractions in Simplest Form

Simplifying Rates and Ratios

Ratio word problem exercise example 1

Ratio word problem exercise example 2

Understanding Proportions

Solving ratio problems with tables exercise

Solving ratio problems with tables exercise 2

Solving ratio problems with tables exercise 3

Describing the Meaning of Percent

Describing the Meaning of Percent 2

Representing a number as a decimal, percent, and fraction

Converting decimals to percents (ex 1)

Converting decimals to percents (ex 2)

Converting percents to decimals (ex 1)

Converting percents to decimals (ex 2)

Finding percentages example

Percent word problems

Taking a percentage example

Number Sets

What is a variable?

Why aren’t we using the multiplication sign

Variables and Expressions 1

Evaluate a formula using substitution

Evaluating exponential expressions 2

Expressions with two variables

Evaluating Expressions with Two Variables

Variable Expressions

Evaluating expressions 3 exercise

Introduction to negative exponents

Thinking more about negative exponents

More negative exponent intuition

Products and exponents raised to an exponent properties

Negative bases and exponents classification example

Capstone exponent properties example

Basic algebraic logic

Representing a relationship with a simple equation

One-Step Equation Intuition

One Step Equation Intuition Exercise Intro

Adding and subtracting the same thing from both sides

Intuition why we divide both sides

Why we do the same thing to both sides two step equations

Why we do the same thing to both sides multi step equations

Why we do the same thing to both sides basic systems

Super Yoga Plans- Basic Variables and Equations

Super Yoga Plans- Solving One-Step Equations

Super Yoga Plans- Plotting Points

Super Yoga Plans- Solving Systems by Substitution

Super Yoga Plans- Solving Systems by Elimination