Calculate and Use

How To : Calculate Faster Than a Calculator

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 teac ...more

How To : Calculate NPV & IRR with a TI BAII Plus calculator

The video shows you how to calculate capital budgeting with a Texas Instruments BA2+ financial calculator. Capital budgeting will help you determine cash flows for given investments for a certain number of years in the future, thus helping you determine if the investment is wo ...more

How To : Calculate proportions and percentages in Excel

This Excel Statistics series of video shows how to calculate proportions and percentages in Microsoft Excel. This video shows how to do percentage calculations using formulas in Microsoft Excel. To make a formula for a percentage, you need to first make a formula to calculate ...more

How To : Calculate the Cost of Driving

With gas prices soaring in the US and around the globe, the cost to drive to a vacation destination is becoming a much larger expense item in the overall travel budget. Although it's easy to see that gas prices have risen dramatically in the past several months, it's not nearl ...more

How To : Create an Excel spreadsheet to calculate your GPA

Open Microsoft Office Excel. Across the top notice letters (columns), along the sides are numbers (rows). The columns and rows can be extended by highlighting sections and right clicking and choosing the high of the row. You can also select to add a border, and change the orie ...more

How To : Calculate the height and volume of a pyramid

Need to know how to calculate the height and volume of a pyramid in geometry? Learn how with this free video lesson. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to ...more

How To : Construct a model windmill and calculate its power

This science video demonstrates how to construct a model windmill and then calculate its power output. This tutorial also includes a discussion of Energy, Work, Power, Joules and Watts. If you know anything about electricity, you'll be fine with this science experiment. If you ...more

How To : Calculate math without a calculator

Before the calculator and even the abacus was invented, there was a little instrument called the human brain that we used to do math. Remember that? While most of us turn to our trusty Ti-84s to do calculus homework or whip out our cell phone calculators to determine how much ...more

How To : Calculate a bonus in Microsoft Excel

New to Microsoft Excel? Looking for a tip? How about a tip so mind-blowingly useful as to qualify as a magic trick? You're in luck. In this MS Excel tutorial from ExcelIsFun and Mr. Excel, the 24th installment in their joint series of digital spreadsheet magic tricks, you'll l ...more

How To : Calculate weight if given the mass

The video shows how to calculate weight if the mass is given and vice versa.Later on in this unit you will learn about Newton's laws of motion and Newton's second law of motion gives us a way to change mass into weight and vice versa.This law will tell you what is happening to ...more

How To : Calculate percent composition for chemistry

To calculate percentage composition we will take the example CO2 it stands for Carbon-Di-Oxide. It is the composition of Carbon and Oxygen. We have one carbon and its weight is 12.01 and 2 oxygen. So, we will multiply 2 with 16.00 which is the weight of the oxygen. C - 1* 12. ...more

How To : Calculate molecular formula using molar mass

The man was requested to solve a short, basic chemistry exercise. He starts by explaining the meaning of the terms involved in the problem: molecular mass, empirical formula and molecular formula. He also explains the way the are connected, for a better understanding of the wa ...more

How To : Use a TI-89 to calculate nCr

This video shows you how to do a mathematical representation on computing the nCr function using a TI-89 calculator. You can write the nCr notation in different forms. It can be simplified from nCr to C(n,r). The symbol can either be read "n choose r" or "n taken r at a time" ...more

How To : Calculate Type I (Type 1) errors in statistics

Need a quick primer on how to solve type-1 error problem in stats? Let this video be your guide. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's e ...more

How To : Calculate a standard (z) score in Microsoft Excel

If you use Microsoft Excel on a regular basis, odds are you work with numbers. Put those numbers to work. Statistical analysis allows you to find patterns, trends and probabilities within your data. In this MS Excel tutorial from everyone's favorite Excel guru, YouTube's Excel ...more

How To : Calculate incentive rates by formula in MS Excel

As you might guess, one of the domains in which Microsoft Excel really excels is business math. Brush up on the stuff for your next or current job with this how-to. In this tutorial from everyone's favorite digital spreadsheet guru, YouTube's ExcelIsFun, the 39th installment i ...more

How To : Calculate percentages in your head

This video explains how to calculate percentages in your head. To calculate a percentage in your head, start by breaking the percentage off into smaller units. For example 25% is 10 + 10 + 5. 30% is 10, 10, and 10. Now you have numbers you can easily work with in your head. Fi ...more

How To : Calculate geometric average in Excel with GEOMEAN

If you use Microsoft Excel on a regular basis, odds are you work with numbers. Put those numbers to work. Statistical analysis allows you to find patterns, trends and probabilities within your data. In this MS Excel tutorial from everyone's favorite Excel guru, YouTube's Excel ...more

How To : Calculate the area of a parallelogram

Calculating The Area Of A Parallelogram A parallelogram is a 4-sided shape formed by two pairs of parallel lines. Opposite sides are equal in length and opposite angles are equal in measure. To find the area of a parallelogram, multiply the base by the height. The formula is: ...more

How To : Calculate percentage change in Microsoft Excel

New to Microsoft Excel? Looking for a tip? How about a tip so mind-blowingly useful as to qualify as a magic trick? You're in luck. In this MS Excel tutorial from ExcelIsFun, the 267th installment in their series of digital spreadsheet magic tricks, you'll learn how to calcula ...more

How To : Calculate the area of complex shapes

Watch this video to learn how to calculate the area inside complex figures--shapes composed of multiple smaller, simpler shapes. The first step is to break the shape into its simpler component shapes. Then, using the information you have about the large shape, find all informa ...more

How To : Calculate probability in "at least one" problems

Calculating probablities can be used to help us make decision. PatrickJMT explains how to calculate probability in an "either A or not A" scenario. The probability of A plus the probability of not A is equal to one. Therefore, the probability of A is equal to one minus the pro ...more

How To : Calculate percentage

Not sure exactly how to calculate a twenty percent tip for your waitress? Or how about how to figure out how much less your cost will be with that thirty percent off tag? Use these steps to calculate percentage, without a calculator. You Will Need: • A pen or pencil • Paper ...more

How To : Calculate simple and compound interest in MS Excel

As you might guess, one of the domains in which Microsoft Excel really excels is finance math. Brush up on the stuff for your next or current job with this how-to. In this tutorial from everyone's favorite digital spreadsheet guru, YouTube's ExcelIsFun, the 2nd installment in ...more

How To : Calculate probability in an Excel pivot table

New to Microsoft Excel? Looking for a tip? How about a tip so mind-blowingly useful as to qualify as a magic trick? You're in luck. In this MS Excel tutorial from ExcelIsFun, the 55th installment in their series of digital spreadsheet magic tricks, you'll learn how to calculat ...more

How To : Calculate weight average atomic mass of an element

In Chemistry weight of some elements are measure in the form of Average Atomic Mass. Isotopes are found in different abundances in nature. Certain elements have many isotopes and certain elements have few isotopes. Regardless of the number of the natural isotopes, the weighted ...more

How To : Calculate the area of irregular shapes

In this tutorial the instructor shows how to compute the area of irregular shapes. He demonstrates this with an example showing an irregular area and says that as there is no direct formula to calculate it, you need to break up the irregular area into identifiable simple geome ...more

How To : Calculate commissions with Excel's IF & VLOOKUP

New to Microsoft Excel? Looking for a tip? How about a tip so mind-blowingly useful as to qualify as a magic trick? You're in luck. In this MS Excel tutorial from ExcelIsFun, the 555th installment in their series of digital spreadsheet magic tricks, you'll learn how to use the ...more

How To : Calculate volume and area in Revit

This video illustrate us how to calculate volume and area in Revit. Here are the following steps: Step 1: First of all open the programme Revit and then click on the volume and area on the left hand side, if in case its not there then right click in the gray bar and then vari ...more

How To : Calculate square roots on paper the easy way

Perhaps not as easy as using a calculator, but easy nevertheless! With mathematics, as with anything else, not everyone progresses at the same rate. Happily, in the age of Internet video tutorials, this isn't a problem. Those who progress quickly can go beyond what's being tau ...more

How To : Calculate sales tax in algebra

In this math lesson we will learn how to solve math problems involving sales tax. Remember these two important formulas: Final price = price before tax + sales tax Sales tax = sales tax rate x price before tax

How To : Calculate and solve for density

Density is a means of representing how much mass is contained in the body of an object. The basic formula is: Density (D) = Mass (M) / Volume (V) so D=M/V. Density is important to know for buoyancy and to understand how heavy an object is. This video will show you three exampl ...more

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