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?