The Rule of 72 - Doubling Time of an Investment

The Rule of 72: Annual Rate or Return Needed to Double Investment

Inflation and The Rule of 72: Time for Money to be Worth Half of its Value Under Inflation

Find the Percent of Change

Divide Fractions Using a Common Denominator

Find the Quotient of Two Percentages as a Percent

Related Rates: Find the Rate of Change in the Water Height as it Drains from a Right Circular Cone

SAT Math Prep: Find the Value of a Computer after 3 Years (Constant Rate of Decrease)

Metric Conversion Shortcut (Single Digit)

SAT Math Prep: Find an Average Cost Given a Ratio of Item Purchased by Two People

SAT Math Prep: Determine the Value of an Expression Given a Linear Equation

SAT Math Prep: Determine x if y = 2 and 49=(xy-3)^2

SAT Math Prep: Simplify an Expression to Determine a Difference of Coefficients

SAT Math Prep: Find a y-coordinate of a Point on a Line Given the Intercepts

SAT Math Prep: Given a Linear Equation in One Variable, Find the Value of an Expression

SAT Math Prep: Find a Base Angle of an Isosceles Triangle in a Diagram

SAT Math Prep: Simplify and Find a Difference of Complex Numbers

SAT Math Prep: Find a Missing Constant in Two Equivalent Quadratic Expressions

SAT Math Prep: Complete the Square on a Quadratic Expression

SAT Math Prep: Find an Equivalent Expression with Radical and Rational Exponents

SAT Math Prep: Given the Roots of a Cubic Equation, Determine the Factors of the Cubic

SAT Math Prep: Find the x-coordinate of the Vertex Given a Quadratic Function in Factored Form

SAT Math Prep: Which Ordered Pair Satisfies a System of Equations

SAT Math Prep: Determine a Function Value of a Rational Function

SAT Math Prep: Find the Interval of the x-coordinate of a Quadratic Function (Factored Form)

SAT Math Prep: Given Two Equivalent Quadratic Expressions, Find a Missing Constant M#1

SAT Math Prep: Given Two Equivalent Quadratic Expressions, Find a Missing Constant M#2

SAT Math Prep: Perform Synthetic Division to Find a Quotient

SAT Math Prep: Find x - y Given a System of Equations

Divisibility Rule for 3

Pattern Multiplying a 2 Digit Number by 11 (Sum of Digits Less than 10)

Divisibility Challenge: Find the Missing Digits

Squaring Numbers with Digits of 1

SAT Math Prep: Review Exponential Decay Function - Country's Declining GCP

SAT Math Prep: Interpret a Constant in a Function Modeling Population

Pattern Multiplying a 2 Digit Number by 11 (Advanced)

SAT Math Prep: Find a Percent of Minutes in Seconds

SAT Math Prep: Find a Missing Angle from a Diagram

Connect The Same Colored Dots without Intersecting Curves

The World Population Reaches 8 Billion!

Graph a Piecewise Defined Function

Evaluate an Expression Based Upon Two Equations

Simplify an Expression Using the Order of Operation: 8/2(2+2)

Find the Reciprocal of a Square root of a Fraction

Simplify a Square Root Expression Using Exponent Rules

Determine the Product to Two Square Roots

Does 0.999… = 1?

SAT Math Prep: Find the Center and Radius of a Circle Given an Equation of a Circle

SAT Math Prep: Determine x Given 3 Exponential Equations

SAT Math Prep: Given f(x+3) = 4x + 5, Determine f(x)

SAT Math Prep: Given f(x+3) = 4x + 5, Determine f(1)

The Monty Hall Problem: Switch Doors or Not?

SAT Math Prep: Find an Expression for the Area Between a Square and Circle

SAT Math Prep: Determine x from an Equation with Many Fractions

SAT Math Prep: Simplify the Sum of Exponential Terms

SAT Math Prep: Find the Area of the Shaded Region of a Rectangle

SAT Math Prep: Given an Equation, Determine the Value of an Exponential Expression (1)

SAT Math Prep: Given an Equation, Determine the Value of an Exponential Expression(2)

SAT Math Prep: Given an Equations, Determine the value of an Expression

SAT Math Prep: Simplify an Expression with Powers of i, the imaginary unit

SAT Math Prep: Determine the Length of a Side of a Right Trapezoid Using the Pythagorean Theorem

SAT Math Prep: Write an Equation from Works and then Determine 3x

Math Challenge: Simplify and Square Root Expression Using Factoring

Stick Multiplication 1: 15*13

Stick Multiplication 2: 23*16

Area of a Sector

Lattice Multiplication: 2 digit times 2 digit

Lattice Multiplication: 3 digit times 2 digit

The Most Beautiful Equation: Euler's Identity

Alternative Method to Add Fractions with Unlike Denominators

Trick Math Problem: Give the Cost of 2 Items and One is $6 More, How Much is the Other Item?

Find a Linear Function Value Given a Table Without the Function Value

Given an Ordered Pair of a Parametric Function, Determine the Function of x

Common Error: Simplifying Fractions

Can You Cut a Cake Into 8 Pieces With Three Cuts?

What 2D Shape Has Maximum Area? What 3D Shape has Maximum Volume?

Interesting Math Facts about Large Numbers

Interesting Math Facts: Four, One, Zero, and Temperatures

Interesting Math Facts: Forty, One, and Palindrome Numbers

Challenge: What Day Is It?

Determine the Fraction of a Square That is Shaded

How To Quickly Add 1 to 100

Exponential Equation Challenge

Square Root Equation Challenge

Equation Challenge: Solve an Exponential Equation with Square Roots

SAT/ACT Practice: Simplify Fraction Raised to Negative Rational Exponent

SAT/ACT Practice: Solve an Equation with a Complex Fraction

Write Numbers Using Scientific Notation

Converting Scientific Notation to Decimal Notation

SAT/ACT Practice: Area of Region in a Rectangle and Outside Circles

SAT/ACT Practice: Exponent Properties Challenge

SAT/ACT Practice: Evaluate a Rational Expression Using Exponent Properties and a Given Equation

SAT/ACT Practice: Given a System of Equations, Find the Value of an Expression

Solve an Equation With an Absolute Value Using Exponent Properties

Express a Interval Using an Inequality and Interval Notation

Find the Area of a Rectangle Inside a Right Triangle

Find the Value of a Logarithm Using a System of Equations

Find a Percent of Change: Increase in Price of Gas

Pi Day is March 14th! 3/14

Number Line Intervals Using Inequalities and Interval Notation

Date and Time 50 Hours after a Given Day and Time

Date and Time 56 Hours after a Given Day and Time

Find a Percent of Change: Decrease in Car Value

Equation Challenge: Solve a Rational Equation with a Complex Fraction

(Trig Review) Trigonometric Function Values Using a Right Triangle

Simplify an Expression: A Product of a Sum of x's

(Trig Review) Find the Perimeter of a 30-60-90 Right Triangle Given the Short Leg

(Animation) The Sum of the Interior Angles of Any Triangle

Determine the Area of a Shaded Region Inside of a Square

(Trig) Determine the Length of a Leg of a Right Triangle Given an Angle and the Hypotenuse

Geometry: Find a Missing Interior Angle of a Triangle

Area Challenge: Find the Area of a Polygon With Sides of Missing Length

Challenge: Evaluate an Absolute Value Expression

Evaluate the Cube of an Expression Given an Equation

Find a Missing Value Given an Average of Values

Find the Interior Angles of a Pentagon

Perimeter Challenge: Find the Perimeter of a Polygon with Sides of Missing Length

Challenge: Evaluate the Sum of Fractions with Square Roots

Find the Measure of a Missing Interior Angle of a Quadrilateral

Find a Missing Interior Angle of a Triangle Given an Interior and Exterior Angle

Absolute Value Expression Challenge

Find Consecutive Integers Given the Sum

Math Challenge: Find the Value of An Expression Given an Equation

Most Commonly Missed Exponent Rules (Product and Power to Power)

Algebra Review: Find a Missing Constant of Function Given a Function Value

Algebra Review: Determine a Difference of Function Values

Sequence Challenge: Find the Next Letter in a Sequence

Common Error: Simplify an Expression Using the Order of Operations

Challenge: Simplify an Expression with Percentages

Equation Challenge: Solve a Radical Equation

Exponent Challenge: Simplify an Sum of Exponential Terms with Exponents Raised to Exponents

Simplify a Quotient of Factorials

Determine the Fraction of a Square That is Shaded

Percent Challenge: 60% of 80 is What Percent of 200?

Product of Square Roots Challenge: Negative Radicands

Equation Challenge: Using an Equation in Two Variables to Find the Sum of Two Variables

Find the Measure of an Exterior Angle of a Triangle Using Given Information

Adding Integers Using a Money Analogy

One of the Most Beautiful Equations: Euler's Identity

https://youtube.com/shorts/p5UkPlMiGqEMake Equations True with Parentheses and Arithmetic Operations: Twos (Part 1)

Make Equations True with Parentheses and Arithmetic Operations: Twos (Part 2)

Make Equations True with Parentheses and Arithmetic Operations: Threes (Part 1)

Make Equations True with Parentheses and Arithmetic Operations: Threes (Part 2)

Make Equations True with Parentheses and Arithmetic Operations: Fours (Part 1)

Make Equations True with Parentheses and Arithmetic Operations: Fours (Part 2)

Make Equations True with Parentheses and Arithmetic Operations: Fives (Part 1)

Make Equations True with Parentheses and Arithmetic Operations: Fives (Part 2)

Make Equations True with Parentheses and Arithmetic Operations: Sixes (Part 1)

Make Equations True with Parentheses and Arithmetic Operations: Sixes (Part 2)

Make Equations True with Parentheses and Arithmetic Operations: Sevens (Part 1)

Make Equations True with Parentheses and Arithmetic Operations: Sevens (Part 2)

Make Equations True with Parentheses and Arithmetic Operations: Eights (Part 1)

Make Equations True with Parentheses and Arithmetic Operations: Eights (Part 2)

Make Equations True with Parentheses and Arithmetic Operations: Nines (Part 1)

Make Equations True with Parentheses and Arithmetic Operations: Nines (Part 2)

Determine Which Exponential Term is Greater: 5^22 or 3^33

The Butterfly Method to Subtract Fractions

Simplify Fractions Using the TI-84: Two Methods

ACT/SAT Math Prep: Determine the Price of a Phone Given Information

ACT/SAT Math Prep: Proportion with Mixed Numbers

Equation Challenge: Solve an Equations with a Complex Fraction

ACT/SAT Math Prep: Given the Sum and Ratio of Two Unknown Numbers, Find Their Product

Arithmetic Challenge: Make an Equation Try Using Addition, Subtraction, Multiplication and Division

The Butterfly Method to Add Fractions

ACT/SAT: Properties of Exponents Challenge

Alternative Method to Multiply When Multiplying by Nines

Number Pattern When Multiplying with 19

ACT/SAT Math: Determine the Ones Place Value of 4 raised to a Large Power

Pattern Challenge: Redefining Addition (Part 1)

Pattern Challenge: Redefining Addition (Part 2)

https://youtube.com/shorts/3hf35_hhnO8https://youtube.com/shorts/FU-S6PyN0bsHow Big is One Million? Numerical Approach

How Big is One Million? Time, Area, Volume

How Big is One Million? Distance and Money

Connect 9 Points Challenge

Make a 3D Design On Desmos Using Functions with Domain Restriction and Transformations

Equation Challenge: Solve an Equation Using Exponent Properties

Curious Calculation #1: The Answer is Always 3?

Curious Calculation #2: The Answer is Always 8?

Curious Calculation #3: The Answer is Always 37?

What is a Googol?

Where is the Missing Dollar?

If a Stock does Down 10% and Then Up 10%. Is it Up, Down, or Unchanged in Value?

If a Stock does Loses 10%, What Gain is Needed to Recover?

ACT/SAT Math: Simplify a Quotient of Radicals Using Rational Exponents

Easily Compare Two Fractions Using Cross Multiplication

ACT/SAT Math: Find the Sum of Coefficients of a Quadratic Function Given f(0) and f(1)

Equation Challenge: Solve 5^(log x)=x Using Logarithms

Arithmetic Challenge: Reposition One Stick to Make an Equation True

Another Way of Showing a^0 = 1

Curious Calculation: The Answer is Always 73!?

Equations Challenge: Solve x^2=2^x

Find the Value of an Expression Given a System of Equations

Logarithmic Equation Challenge

Quotient Challenge: What is 4/50%?

Subtracting without Exchanges with a Minuend with 0's

Why is x^0=1?

Can You Make Exactly 4 Gallons of Water From a 3 Gallon and 5 Gallon Container

Which Fraction is Closest to 1/2?

Equations Challenge: Solve x^(1/2) = x^(1/4)

Equivalent Expressions? log_2(4^3) and log_2(4)^3

Plotting Points on the Coordinate Plane

What is 50% Divided by 1/2?

Use Eight 8's and Addition to Make 1000

Evaluate 5 Plus 20 Divided by 1/2

Name That Math Formula

Are the Three Fractions Different?

Challenge: Find the Next Term in the Sequence

18th Century Riddle: Find Your Son's Age

18th Century Riddle: What Time Is It?