Hot Math Posts
How To: Find the volume of a rectangular prism
Another thing you will learn in geometry is volume. In this tutorial, learn how to find the correct volume of a rectangular prism. A rectangular prism is a three dimensional object, which is why you are searching for volume as opposed to area. Check out this video and see just how easy it is to calculate rectangular volume.
How To: Calculate percentages from fractions
Wondering how to calculate percentages from fractions? Just follow the few steps as given below. Firstly, take any fraction and multiply with 100. The resultant value that you get is nothing but the percentage itself.
How To: Convert between diameter and radius
To convert between diameter and radius just follow a few steps. Sometimes we aren't given the number directly so first we need to find the diameter.
How To: Solve for X (advanced)
The video describes how to find 'x' in the algebraic equation -3x + 7x - 6 = 30
How To: Learn Calculus in 20 minutes
Did you sleep all semester in your Calculus class? Are you just waking up now to realize you have a test on Monday and that you're totally screwed? Well, luckily you can learn an entire semester worth of Calculus in just twenty minutes... or at leasts that's the hope.
How To: Isolate a variable
If you're struggling a bit with algebra, check out this video to learn how to isolate a variable. Isolating a variable is a matter of separating and simplifying.
How To: Turn multiplication into sum
This is a handy math trick that show you how to turn a multiplication problem into a sum problem. An unusual way to perform a multiplication. You only need to be able to sum, halve and double numbers. It is not efficient, but it is rather intriguing and fun.
How To: Solve ratio problems
Check out this instructional math video that demonstrates how to solve ratio problems. In the 14th lesson, learn how to solve SAT problems using the Official SAT Study Guide. Here are the math problems and their page numbers that this video covers:
How To: Use matrices, Gaussian elimination, and determinants
A close look at using matrices, Gaussian elimination, and determinants. This video is good for beginners who have never used a matrix before.
How To: Use logarithms, with the basics
Lawrence Perez, from Saddleback College, and his assistant Charlie, give this intermediate-algebra lesson on logarithms, the bare basics of them. Know nothing about logarithms? Well, you've come to the right place.
How To: Subtract numbers on an abacus calculator
Lawrence Perez, from Saddleback College, and his assistant Charlie, give this two-part arithmetic lesson on subtracting with an abacus. Could this be any easier than adding? Maybe, can you "borrow" the knowledge to subtract these numbers without an electric calculator? See for yourself.
How To: Convert scientific notation to standard algebra form
Learn how to convert from scientific notation to standard form by watching the above math video. To change a number from scientific notation to standard form, move the decimal point to the left (if the exponent of ten is a negative number), or to the right (if the exponent is positive). You should move the point as many times as the exponent indicates. Do not write the power of ten anymore.
How To: Add Mixed Numbers Tutorial
This step by step video teaches how to add mixed numbers AKA mixed fractions easily!
How To: Convert a Mixed Number to an Improper Fraction Tutorial
This easy tutorial will show you how to convert a mised number into an improper fraction in a few easy steps.
How To: Divide Fractions Tutorial
An easy step by step video tutorial on dividing fractions.
How To: Multiply Fractions Easy Tutorial
In this step by step video I'll show you how to multiply fractions.
How To: Subtract Fractions with Unlike Denominators Step by Step
Learn how to subtract fractions with unlike denominators by watching this easy video tutorial.
How To: Subtract Fractions with Like Denominators
This easy video tutorial teaches how to subtract fractions with like denominators step by step.
How To: Add Fractions with Unlike Denominators Tutorial
This video tutorial teaches you step by step how to add fractions with unlike denominators.
How To: Add Fractions Tutorial
Learn how to add fractions with this easy step by step video.
How To: Use a Venn Diagram to Solve Probability Problems
Video covering how to set up a Venn diagram. The video covers how to draw the diagram and then look at a set of data and place the data in the correct part of the Venn diagram. The sample problem is as follows.
How To: Find the Height of a Trapezoid.
Step by step directions for finding the height of a trapezoid. Video: .
How To: Find the Area and Volume of a Hemisphere
A hemisphere is sphere that has been cut in half. When you cut the sphere in half you are left with the great circle, plus half of a sphere. This fact can be used to find the area, and the volume of a hemisphere. The video works several example problems in which the area and volume of a hemisphere is calculated.
How To: Multiply by 11 Faster Than a Calculator
Yes, with this simple technique you can multiply 2 digit numbers in your head. The video also reviews a really easy method for multiplying larger numbers by 11 in a simple fashion.
How To: Multiply Any Number by 11 Easily
This video shows two techniques for multiplying any number by 11. Using these techniques you will find it is easier than using a calculator.
How To: Find the Surface Area of a Cylinder.
Step by step directions for finding the surface area of a cylinder. In order to calculate the surface area of the cylinder you find the area of the two bases and add this to the lateral area.
How To: Find the Volume of Composite Figures (Also Called Composite Shapes)
Composite figures are composed of several geometric shapes and are three-dimensional shapes. The first composite shape is a combination of a rectangular prism and a pyramid. To find the volume of the entire shape you find the volume of each individual shape and add them together. The second figure consists of a cylinder and a hemisphere. Check out the video below for the full lesson.
How To: Find the Volume of a Truncated Pyramid.
A truncated pyramid (frustum) is a pyramid with the top cut off. This video reviews how to find the volume.
How To: Classify a Triangle as an Isosceles Triangle.
Video: . What is an isosceles trapezoid. The video goes over the properties that are unique to an isosceles trapezoid.
How To: Simplify Square and Cube Roots
Whenever you simplify a square root or a cube root you are writing them in the simplest form. This video teaches a factoring method.
How To: Complete the Square of a Quadratic Function.
How to use "we half it,we square,we add it to both sides" when using the complete the square" This method can help make a complex Math problem a little bit easier.
How To: Add Fractions Without a LCM
This video has 7 fraction hacks that can save you time when working with fractions. The hacks are: Adding fractions without a LCM
How To: Find the Sector Area
The sector area is a section of the circle. You can think of it as finding the area of a pizza slice instead of the entire pizza.
How To: Simplify Complex Fractions
The key to simplifying fractions is to convert the fraction from a hamburger to a hot dog. In other words you change it from a fraction to a division problem, and then use Keep,Change,Flip to simplify. The video explains all of this and helps make complex fractions,simple.
How To: Change a Quadratic from Vertex Form to Standard Form.
The Vertex Form of a Quadratic Equals Vertex Form = F(X) = a(X-H)^2 +K (H,K) = Vertex, and the standard form equals f(x) = ax^2 + bx + c. This video explains how you switch from the vertex form to the standard form.
How To: Find the Perimeter of a Rectangle
If you have a rectangle and the length of only one side is given,how do you find the perimeter. The video shows how the diagonal creates a right triangle. This right triangle can be used to find the other side of the triangle, and then the perimeter.
How To: Simplify Complex Fractions
Complex fractions are fractions that contain a fraction in the numerator,the denominator, or both. You can use the Keep,Change,Flip method in order to simply these complex fractions.
How To: Work a Tension Problem
In this video tutorial I will be explaining how to work a tension problem. Usually these problems are found during a Newtons laws unit in physics. I am currently in physics and I thought I might share my strategy and work to help you guys succeed in the problems. Thank You. The video was made with Explain Everything. Also, please check out my youtube channel. It is new and I pasted a link for you guys to check out. Like comment and subscribe!
News: I Can Guess Your Address Any Where in the World
mind blowing maths trick.
How To: Divide Any Number with 5 in Just a Few Seconds
Fast maths tricks!