When you need to crunch numbers quickly — and I mean really quickly — there's a cool method you can use to multiply two numbers together in just a few seconds. This is great when you need to speed through multiplication homework, and is also good for impressing your math teacher or peers, or as just a cool party trick (depending on your crowd). Mental math for the win! Now, this trick will only apply in a few multiplication settings, but more on that later. For the first example, let's calculate the following: 24 x 26 =Start by taking the first digit of the first number (2 for 24) and multiplying that by the number directly higher than it, which will give you the first digit(s) of the answer. So for 24 multiplied by 26, it would be 2 (first digit in first number) multiplied by 3 (one digit higher) = 6. This means that 6 is our first digit in the answer. Now take the second digit of the first number (4 for 24) and multiple that by the second digit of the second number (6 for 26), which...more

Whether you're shopping for deals, need help with a little math, or any number of other occasions, it's a valuable skill to know how to quickly figure out a percentage given two numbers. Let's say you're shopping and you come across a pair of shoes that are normally $45, but now they're on sale for $36. To figure out just how much of the original price you're paying, you just need some quick math. Convert Numbers into DecimalsSince you want to figure out what percent 36 is to 45, start by turning that into a fraction: 36/45 ... and then turning that fraction into a decimal: 36/45 = 0.8. Convert Decimal into PercentNow that you have the decimal, simply multiple it by 100 to get the percentage: 0.8 X 100 = 80 ... which leaves us with 80%! So, to sum up, 36 is 80% of 45, which means that pair of shoes is only going to cost you 80% of what they normally cost. Check out the video guide from Davitily below to see each step calculated...more

Slope is the change in Y over the change in X. Written out, the formula looks is as follows: (y2-y1)———(x2-x1) It's a simple formula that just requires you to input your coordinates to calculate the value of the slope. Values are generally notated as such: (x1,y1), (x2,y2) Don't Miss: Get Help with Math Calculating SlopeFor this example, we'll use the following coordinates: (-7,5), (-4,7) This means that the following is true: x1 = -7x2 = -4y1 = 5y2 = 7 Knowing this, we simply have to plug in the numbers to the slope formula: (7) - (5)———(-4) - (-7) This of course equates to the following: 2—3 So, for the coordinates (-7,5) and (-4,7), the slope is 2/3. For a video guide, check out the tutorial below from Davitily. Cover image via...more

In this video you will learn how to calculate the radius,diameter, and volume of a sphere given the...more

In order to solve equations correctly you need tofollow the correct order of operations. An easy way to remember this correct order is to use PEMDAS In this video I work several example order of operation problems. For more on PEMDAS see,ORDER of...more

Learn how to multiply and divide fractions.In order to multiply fractions you multiply the numerators and denominators, and then simplify.In order to divide fractions you keep,change the sign, and flip the second fraction,and then simplify the...more

Use the STOP method in order to make the one step equations easy.The stop stands for,S is separateT is get the variable totally aloneO complete the opposite operationP Please check your work The video shows how to solve a one step equation with addition,subtraction,,multiplication,division,and...more

Changing from standard form to vertex form-Quadratic EquationsStandard form = ax^2 +bx+c=yVertex form = a(x-h)^2 +k =yThe video gives step by step directions for converting from standard to vertex form. Transcript Hi welcome to MooMooMath Today we are going to talk about Quadratics and changing a quadratic from standard form to vertex form Let's overview quickly what standard form is. Standard form is ax squared plus bx plus c is equal to y ( ax^2 +bx +c = y) and vertex is equal to a parenthesis x minus h quantity squared plus k equals y. ( a(x-h)^2 +k=y ) Those are the two forms of the quadratic. The vertex form is handy because the h k is your vertex and standard form is nice if you are using the quadratic formula. Sometimes we have to go from standard form to vertex form . Let's learn how to do that. Let's start with a lead coefficient of one which is the easier one. We have x^2 + 8x + 3 = y We want to change this to the vertex form. Step 1 is to group our x values together and...more

The video reviews how to find the radius of a sphere given the volume.For example, find the radius of a sphere with a volume of 72 meters squared.The volume formula is 4/3 pi r cubed.In order to solve for the radius you have to undo the...more

In this video I show how to subtract integers by using counters. The counters help you visualize the process of subtracting integers. If you struggle with remembering how to subtract positive and negative numbers,this video will help. The counters are helpful because they help you visualize the subtraction...more

In this video I will go over how to solve unit rate problems. Lets first go over we solve for unit rate.Step 1. Set up a proportion equal to one unit. For example:If 8 oranges cost 40 cents, what is the cost of 1 orange?Step 2. Next, cross multiplyStep 3. Solve for x.Therefore,one orange equals 5 centsThe video works several example...more

An outlier is a number in a data set that is much smaller or larger than the other numbers in the data...more

In this video you will learn to add and subtract integers.Follow these simple steps to add and subtract...more

In this video you will learn how to identify the faces,edges, and vertices of a 3D solid. The face of a solid is the flat surface. The edge is where two faces meet, and the vertices is the point where two or more edges...more

Bringing the fun back into test questions for elementary school...more

This step by step video teaches how to add mixed numbers AKA mixed fractions...more

Learn how to solve basic two step equations. Solving two step equations.When solving a two-step equation you will need to perform two steps in order to solve the equation. When solving a two -step equation you want only variables on one side of the equal sign and numbers on the other side of the equal sign. In addition the number in front of the variable needs to be equal to one. Remember when solving a linear equation, whatever you do to one side of the equation, you must do to the other side of the equation. Let's look at some example...more

This easy tutorial will show you how to convert a mised number into an improper fraction in a few easy...more

In this video you will learn about slope intercept form. Today we are going to look at slope intercept form of a line.What form is that in?It is in form, y = mx + bm = slope of the lineb = y interceptWhat is a y intercept?It is the point in which the y crosses the x axisMy y axis is the long axis, I remember it because y is a long letterThis intercept is 1,2, 3 I have a y intercept of positive 3What is my slope?I pick two points on the line and I count.I will go down 3 and over 2Basically you draw a right triangle, and we count 1,2,3 down and 1,2 acrossIt will be 3/2.It is slopping down so it will be a negative 3/2Finally, we just plug and m and a b into our equation.I will go back over here and for my slope I will plug in negative 3/2For my y intercept I will put in y intercept I will plug in 3.There you go, you have your y intercept equation from a graph.Let's look at an overviewy=mx+bm = slopeb = y...more

An easy step by step video tutorial on dividing...more

This video reviews several weak study habits, and then reviews some great study habits. In this video you will review weak study habits, and then some great study habits Examples of weak study habits Heavy emphasis on highlighting Passive reading and rereading Glancing at a solution and thinking you have it. Go ahead and solve it.Cramming for testsSolving the same type of problem that you already know over and over againIgnoring areas of confusion. Instead take some time and ask your teacher or friends about these confusing areas.Thinking that you will learn deeply when you are distracted or multi-taskingNot enough sleep Examples of Wise Study Habits Use recall while looking over notes and while readingTest yourself on everythingSpace out your learningIncorporate memory techniquesFocus by using a timer and time your study sessionsDream about where your studies will take you in lifePractice active learning by recall and...more

In this step by step video I'll show you how to multiply...more

Learn how to subtract fractions with unlike denominators by watching this easy video...more

This easy video tutorial teaches how to subtract fractions with like denominators step by...more

This video tutorial teaches you step by step how to add fractions with unlike...more

Learn how to add fractions with this easy step by step...more

In this video you will learn how to calculate percentage change between two numbers.The formula you can use is new value minus the old value/old value times 100A positive number will be a percent increase, and a negative number will be a percent...more

In this video learn how to convert a decimal to a fraction Learn how to convert a decimal to a fractionStep 1 Create a fractionStep 2. The numerator will be the number to the right of the decimal pointStep 3. The denominator becomes the value of the last numberFinally, simplify the...more

How do you tell if data is discrete or continuous? Discrete data is data that has distinguishable spaces between values.Often it is data that is counted.On a graph the ordered pairs are at specific locations, so the graph is not connected, but only pointsSome examples of discrete data include,DogsPeopleTickets you have for a show.Continuous data is data that falls on a continuum.On a graph it is all of the points, and the points in between.It is data that can be measured as finely as possible.It is often a physical measure.Discreet data will often will contain fractions or decimals.Some examples of continuous data include,TimeAgeHeightWeightLet's look at two examples and see the differences between these types of data.Family MembersDiscrete 5 family membersContinuous: Range between 5 feet and 6 feet tallBooks, books on your book shelf.The discreet data is that you have 6 books on your bookshelf.Continuous data is that they range in height from 15 to 30 cm in...more

Use this video flowchart to help determine if a number is a rational or irrational...more

In this video I will focus on converting units of measure. In this video I convert 5 feet to meters. In this example I only know that 12 inches are in a foot, and the 1 inch equals 2.54 centimeters. The second conversion is miles to...more

In this video I demonstrate a system for memorizing numbers. I have found it helps to memorize numbers if you can convert the number into a picture. I convert each number into a picture and then create a story to go along with the pictures. I was able to memorize all of the birthdays of friends and my family this...more

In this video you will learn to use the discount formula to calculate the purchase price from a discount and sales...more

In this video you will learn the basics of reading a box and whisker...more

In this video you will learn how to create a frequency table for a data set that has a wide range.The key to the frequency table is to create intervals for your frequency...more

In this video you will learn two methods for converting a Quadratic equation from Standard form to Vertex...more

In this video you will learn how to find the surface area of an octagonal prismUse the formula 2 times base area + Lateral area Step 1. In order to find the base area you will need to find the apothem using the central angle and then trig to find the apothem. Step 2. Plug the apothem into 1/2apothemperimeter for the base areaStep 3. Multiply the Perimeter times height for your lateral area Step 4 Add step 2 ( base area)and step 3 ( Lateral area)for your surface...more

In this video you will learn how to use your hands in order to multiply 6,7,8, and 9.The trick is easy, and effective.Check the video...more

In this video you will learn how to divide fractions using "Keep Change...more

In this video you will learn the basics of analyzing data using center, spread, and shape.Measures of center include mean,median,and mode.Measures of spread include range, and interquartile range.Measures of shape include looking for clusters,gaps, and...more

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...more

In this video you will learn how to create a cumulative frequency table in four easy...more

In this video you will learn how to create a frequency...more

Changing from standard form to vertex form-Quadratic EquationsStandard form = ax^2 +bx+c=yVertex form = a(x-h)^2 +k =yThe video gives step by step directions for converting from standard to vertex...more

In this video you will learn how to find the mean and...more

In this video you will learn how to find the volume and surface area of a triangular prismA triangular prism has two triangle...more

In this video you will learn how to find the volume and surface area of a trapezoidal prism.A trapezoidal prism has two bases that are...more

In this video you will learn how a histogram is different than a bar...more

In this video you will learn how to find the area and volume of a hemisphere. A hemisphere is half a...more

In this video you will learn how to find the surface area of a rectangular prism when the slant height is...more

In this video you will learn how to write a ratio three different ways.You can write a ratio in fraction form, using a colon, or using...more

In this video you will learn how to find the surface area of a triangular prism, rectangular prism, and a...more

Data can be divided into two groups, qualitative and quantitative data.In this video you will learn the difference between these two types of...more

In this video you will learn how to find the surface area of a square pyramid.Finding the surface area is a two step process.First you find the lateral area, and then add that to your bass...more

In this video you will learn the area and perimeter formulas for popular...more

In this video you will learn how to find the surface area of a cube,rectangular prism,triangular prism, and a square...more

In this video you will learn to convert a repeating decimal to a...more

In this video you will learn how to change a repeating fraction back to a...more

In this video you will learn how to convert a video to a fraction. Follow these three steps. Step 1. We need to create a fraction, but what will the top and bottom numbers be?Step 2. The numerator will be the number to the right of the decimal point.Step 3. The denominator will be the last place value after the decimal.Step 4. Simplify the fractionA quick review of place...more

Quick video covering how to read a decimal. A decimal is a number with two or more digits to the right of a decimal point. You read a decimal by reading left to right and starting at tens instead of ones. For instance, 2.75 would be 2 and 75...more

In this video you will learn directions for finding the side length of an isosceles triangle.Find the length of side a of an isosceles triangle with a height of 10 and a base of...more

In this video you will learn a easy way to convert gallons to liters and liters to...more

In this demonstration I used skittles in order to illustrate the Pythagorean...more

Use this video to quiz yourself about polygons.A polygon is a plane shape without any curves. Common examples would be a triangle or...more

In this video you will learn to solve one step equations with decimals Welcome to MooMooMath where we upload a new Math video everyday. In this video you will learn how to solve one step equations with decimals. I will work three types of one step equations. One with multiplication, one with division, and one with addition and...more

In this video you will learn the characteristics of a polygon. A polygon is a 2D shape that has straight lines and no...more

In this video you will find the volume of a circle using the box...more

In this video you will see a demonstration of the volume of a cylinder compared to the volume of a cone.I filled up three cones and poured them into an equal sized cylinder.Watch what...more

In this video you will see a demonstration that will help you understand the surface area formula of a sphere and a...more

In this video you will learn how to apply the formula for surface area in order to solve two word problems. The first word problem involves a bowling ball, and the second one involves finding the radius of a sphere from the surface...more

In this video you will see the formulas for area and perimeter visually presented. The shapes include a rectangle,square,circle, parallelogram,triangle, and a trapezoid. Hopefully the visual picture will help you understand the...more

In this video you will learn how to find the area of a composite figure.A composite figure is a geometric shape composed of more than one...more

In this video you will learn basic geometry...more

In this video you will learn how to find the area of composite figures. In this video the composite figures are composed of rectangles,triangles, and...more

In this video you will learn how to solve an inequality that is appropriate for a middle school...more

In this video you will learn how to subtract mixed fractions.I like to convert mixed fractions to an improper fraction, and then subtract the improper...more

In this video you will learn how to add three...more

In this video you will learn how to find the volume and surface area of a hemisphere.A hemisphere is half of a sphere.Think of cutting an orange exactly in half.Each half will be a...more

In this video you will learn how to convert units of measure using dimensional analysis.For example, 10,000 feet per hour equals how many miles per...more

In this video you will learn how to set up tangent.Tangent is a trig ratio of opposite over...more

A composite figure is two or more geometric shapes combined.In this video you will learn how to find the area of three different composite...more

Watch this demonstration in order to see why the volume of a square pyramid is 1/3 the volume of a...more

What is the difference between a concave and convex polygon? In this video you will learn a concave polygon has an interior angle measure greater than 180 degrees, and a convex polygon does...more

Platonic Solids are convex polyhedrons that have congruent faces, and equal corners. There are 5 recognized Platonic Solidstetrahedron, octahedron, icosahedron, cube, and a...more

In this video you will learn how to convert...more

In this video you will learn what an equivalent fraction is?Equivalent fractions look different,but have the same...more

Use this easy method for subtracting fractions from whole numbers. The shortcut even works with mixed...more

In this video you will learn how to subtract mixed numbers two different ways. Method one uses regrouping, and the second method uses converting the mixed number to an improper fraction then...more

Euclidean Geometry is the Geometry of flat space.It is based on the work of Euclid who was the father of Geometry.He proposed 5 postulates or axioms that are the foundation of this mathematical branch of Geometry.The 5 postulates are,It is possible to draw a straight line from any point to any point. If you have a straight line it is possible to extend in any direction to infinity. It is possible to draw a circle given any center and a radiusAll right angles are equal (congruent). If you have two straight lines, and a third line crossing them, and the sum of the interior angle measure of the two lines is less than two 90 degrees, then if you extend the lines, they will eventually cross on that...more

In this video you will learn how to basics for graphing inequalities on a number line.Inequalities show that two expressions are not equal. For example a number can be greater than,greater than less than,less than, less than ,less than or equal to, and not equal to. When graphing the inequality on a number line you can use an open graph that does not include the number, and closed in which includes the...more

In this video you will learn o change a quadratic equation from standard form to vertex...more

In this video you will learn how to graph quadratic equations. A quadratic equation is an equation of a...more

In this video you will learn how to solve one step equations with decimals.The video works one problem with division,one with multiplication, and one with addition and subtraction of...more

In this video you will learn how to simplify expressions with variables. This expression is a fraction which is another name for a rational, so sometimes you will hear them called a rational expression, which are just fractions. For example, how would yo simplify...more

In this video you will learn how to solve basic one step equations that contain fractions.The video contains two examples in which you have to divide the fractions, and one in which you multiply the fractions. For more one step equations...more

Learn how to solve geometry word problems. For example, how would you solve the following problem? A prism has a square base a prism has a square base with a side of 3 the volume is 90 a square pyramid has the same width, base and height as the pyramid, what is the...more

You can use, Original Price-(Original Price Discount) = Sales Price in order to calculate a discount...more

In this video you will learn how to convert from meters to feet, and then from meters to...more

In this video you will learn the basics of the metric...more

It's all about that...more