Math Mammoth
Math Mammoth: Percent
Demonstrates how to convert percents to fractions and the reverse. [8:12]
Math Mammoth
Math Mammoth: Percent of a Number
See how you can use mental math to find the percent of a number by first determining 1% or 10% of the number. [7:04]
Math Mammoth
Math Mammoth: Percent of a Number Using Decimals
See how to find the percentage of a number by converting the percent to a decimal and then multiplying. [5:23]
Math Mammoth
Math Mammoth: What Percentage / How Many Percent?
See how to think through problems asking for the percent by first thinking about fractional parts. [6:10]
Math Mammoth
Math Mammoth: How to Solve Basic Percent Word Problems, Part 1
This video demonstrates how to solve problems involving discounts to prices. [6:21]
Math Mammoth
Math Mammoth: How to Solve Basic Percent Word Problems, Part 2
This video demonstrates how to find a percentage of an area by beginning with fractional parts. [4:55]
Math Mammoth
Math Mammoth: How to Calculate Sales Tax
Demonstrates how to determine a total price that includes the sales tax. [8:19]
Math Mammoth
Math Mammoth: A Beginner Lesson on How to Calculate Simple Interest
See how to perform calculations involving interest rates. [9:28]
Math Mammoth
Math Mammoth: How to Calculate the Percent of Change (Increase or Decrease)
A beginning lesson that demonstrates how to find the percentage of change, whether an increase or decrease. [9:47]
Math Mammoth
Math Mammoth: Percent of Change: Applications
Demonstrates how to solve two problems about percentage change, one involving area and the other discounts. [7:17]
Math Mammoth
Math Mammoth: Relative Difference or Percentage Difference: Comparing Values
This video explains how to find the percentage difference between two values by first determining the reference value. [6:51]
Math Mammoth
Math Mammoth: Angle Relationships and Unknown Angle Problems
Explains what supplementary and vertical angles are and demonstrates how to solve some problems with angles and intersecting lines. [8:21]
Math Mammoth
Math Mammoth: Drawing Geometric Shapes With Given Conditions
This video demonstrates how to draw different polygons given a set of conditions. [7:47]
Math Mammoth
Math Mammoth: Drawing Triangles With Given Conditions
This video presents a number of problems where students would be asked to draw triangles that meet the given criteria. [8:48]
Math Mammoth
Math Mammoth: How to Calculate Area of a Circle, Plus Simple Proof for Formula
Demonstrates how to use the formula for the area of a circle to solve word problems. A proof of this formula is also presented. [9:56]
Math Mammoth
Math Mammoth: Pi and the Circumference of a Circle
Explains what pi is and models how to solve circumference problems. [8:12]
Math Mammoth
Math Mammoth: What Are Expressions and Equations?
Explains the definitions of and the difference between expressions and equations, and how to write an expression from a written description. [4:42]
Math Mammoth
Math Mammoth: Working With Expressions and Equations
Explains how to write an equation from a written description and presents problems where each situation must be matched with the correct expression. [4:37]
Math Mammoth
Math Mammoth: Simplifying and Writing Expressions 1: Length and Perimeter
This video describes how to simplify algebraic expressions for the lengths of line segments and explains what the definition of a term is. It also shows how to simplify an expression for perimeter. [9:58]
Math Mammoth
Math Mammoth: Writing and Simplifying Expressions 2: Area
This video demonstrates how to simplify algebraic expressions involving the area of rectangles. [9:43]
Math Mammoth
Math Mammoth: The Distributive Property: Many Examples and the Area Model
This video presents examples of the distributive property with multiplication and addition, and its application in problems involving the area of rectangles. [12:12]
Math Mammoth
Math Mammoth: Commutative and Associative Properties
Explains what the commutative and associative properties of addition and multiplication are and investigates whether they work for subtraction and division. The video then looks at examples to see if expressions are equal and simplifies...
Math Mammoth
Math Mammoth: Order of Operations: Exponents Review
This lesson reviews exponents and presents the PEMDAS rule for order of operations, followed by its application in several examples. [5:23]
Math Mammoth
Math Mammoth: Order of Operations: More Challenging Examples
Presents more complex problems to solve using the order of operations. Includes exponents and decimals in the discussion. [6:26]