# Calculate Search Results ### How To: Calculate limits with algebra and series expansion

Looking for an easy way to find limits? Watch 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 the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this free math tutorial, you'll learn how to find limits using series expansion and little bit of algebra. ### How To: Calculate the area of rectangles and triangles

Need to know how discover the area of a triangle or rectangle? 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 easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to find the area and peri... ### How To: Calculate sales using a compact array formula in 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 602nd installment in their series of digital spreadsheet magic tricks, you'll learn how to create a compact array formula that can total sales with 1 criteria when the database does not have a price or total sales column. See how SUMIF can be used to lookup values and simulate a missing column from a database. ### 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 average mass takes into consideration not only the mass of each isotope, but what also its natural abundance in terms of percent as found in the nature. So when you have the mass of two isotopes of an element and are gi... ### 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 way the exercise is solved. ### How To: Calculate the optimal angle for a projectile

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 easier than ever to follow in their footsteps. With this four-part installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to find the optimal angle at which to launch a projectile. ### How To: Calculate the slope of a line in algebra

Looking for a guide on how to figure out the slope of a line in basic algebra? 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 easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to calcul... ### How To: Calculate & compare interest rates in Microsoft Excel

Whether you're interested in learning Microsoft Excel from the bottom up or just looking to pick up a few tips and tricks, you've come to the right place. In this tutorial from everyone's favorite digital spreadsheet guru, ExcelIsFun, the 48th installment in his "Highline Excel Class" series of free video Excel lessons, you'll learn how to use the RATE, EFFECT, NOMINAL and NPER Excel functions to solve the following problems: ### How To: Calculate days with Microsoft Excel's INT function

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 300th installment in their series of digital spreadsheet magic tricks, you'll learn how to use date and time functions together. Specifically, you'll see how to use the INT function to calculate total days worked and the TEXT function to calculate total hours worked. ### How To: Calculate return on equity, assets and profitability in Microsoft 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 19th installment in his "Excel Finance Class" series of free video lessons, you'll learn how to calculate return on equity, assets, and profitablility — return on investment (RoI). ### How To: Calculate quartiles with the Microsoft Excel 2010 QUARTILE function

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 725th installment in their series of digital spreadsheet magic tricks, you'll learn how to calculate quartiles with the MATCH and QUARTILE function. ### How To: Calculate interest on a loan payment in MS Excel 2007

Learn how to calculate interest on loan payments with Microsoft Excel 2007. Whether you're new to Microsoft's popular digital spreadsheet application or a seasoned business professional just looking to better acquaint yourself with the Excel 2007 workflow, you're sure to be well served by this video tutorial. For more information, and to get started making your own loan payment calculations, watch this free video guide. ### How To: Calculate percent error

For all you high school students trying to understand physics, this tutorial is here to help show you how to calculate the percent error. This may seem like a very hard problem to solve, and it can be, but in fact can be easy to solve with the right help. So this tutorial is here to give you the information that you may or may not know. So good luck and enjoy! ### How To: Calculate age in years with DATEDIF & TODAY in 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 594th installment in their series of digital spreadsheet magic tricks, you'll learn how to calculate age in years using the TODAY and DATEDIF functions. ### How To: Calculate subtotals in Microsoft Excel

Whether you're interested in learning Microsoft Excel from the bottom up or just looking to pick up a few tips and tricks, you've come to the right place. In this tutorial from everyone's favorite digital spreadsheet guru, ExcelIsFun, the 18th installment in his "Highline Excel Class" series of free video Excel lessons, you'll learn how to calculate (and sum) subtotals in Excel. See how to do subtotaling with the SUM function. ### How To: Calculate skew in a distribution 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 ExcelsFun, the 44th installment in his "Excel Statistics" series of free video lessons, you'll learn how to use the SKEW function to calculate the skew in a distribution of data. ### How To: Calculate invoices and trade discounts 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 43rd installment in his "Excel Business Math" series of free video lessons, you'll learn how to complete an invoice and calculate trade discounts. ### How To: Calculate cash discounts by dating in Microsoft 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 48th installment in his "Excel Business Math" series of free video lessons, you'll learn how to calculate cash discounts via dating. ### 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 in his "Excel Business Math" series of free video lessons, you'll learn how to calculate (piecework/comission) incentive rates by Excel formula. ### How To: Calculate expected return with an Excel array formula

Looking for a primer on how to create and work with arrays in Microsoft Office Excel? You've come to the right place. In this free video tutorial from everyone's favorite MS Excel guru, YouTube's ExcelIsFun, the 3rd installment in his series of Excel array formula series, you'll learn how to create an array formula that will calculate the expected return for a given stock. ### How To: Calculate the United States unemployment rate

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 easier than ever to follow in their footsteps (or just study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to calculate the US unemployment rate given the raw data. ### How To: Calculate commissions with Excel's VLOOKUP function

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 206th installment in their series of digital spreadsheet magic tricks, you'll learn how to calculate commissions with the VLOOKUP function when the lookup value is an account type instead of a number. ### How To: Force a stuck formula to calculate 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 210th installment in their series of digital spreadsheet magic tricks, you'll learn what to do if your formula does not calculate and is showing the equal sign and the rest of the formula without calculating. ### How To: Calculate variable commission totals in MS Exce

Love Microsoft Excel? This clip contains a tip that just might induce you to. With this free video tutorial from ExcelIsFun, the 46th installment of his "YouTubers Love Excel" or YTLE series of free video MS Excel lessons, you'll learn how to use the DOLLAR, VLOOKUP, INDEX and MATCH functions and a previous bracket commission formula trick to calculate total commissions when you have variable commissions paid out. Learn to love digital spreadsheets more perfectly with the tricks outlined in t... ### 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 calculate probabilities with a pivot table (PivotTable). Specifically, you'll learn how to find joint, marginal and conditional probabilities. ### 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 various attributes appear, choose from here. ### How To: Calculate the age of the universe w/ Hubble's constant

This is a great instructional video on how to calculate the age of Universe from Hubble's constant. The speed the galaxy moves away from us is directly proportional to the distance from us. Now think of big bang theory. Hubble's constant is equal to velocity over distance. 1 over Hubble's constant is equal to distance over velocity that is equal to time. Time equals to 1over 71. If you change it into all the same units words it is one over 71000 or 3.09x 10 to the power of 22. It is 3.09x10 t... ### How To: Calculate price per unit with basic arithmetic

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 easier than ever to follow in their footsteps. With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to unpack and solve word problems that require you to find price per unit. ### How To: Calculate salary based on work experience in MS 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 629th installment in their series of digital spreadsheet magic tricks, you'll learn how to use the VLOOKUP, MATCH, DATEDIF, SUMIF, SUMPRODUCT and INT functions to look up salary based the number of relevant years worked. ### 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 learn 5 different methods for calculating a bonus using VLOOKUP, MAX, Boolean, and 2 IF formulas. ### How To: Calculate percentiles and quartiles in Microsoft Excel

f 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 ExcelsFun, the 37th installment in his "Excel Statistics" series of free video lessons, you'll learn how to use the PERCENTILE and QUARTILE functions. ### How To: Calculate future value for a sinking fund 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 48th installment in his "Excel Business Math" series of free video lessons, you'll learn how to use the Excel functions FV and PMT to make a future value calculation for a sinking fund. ### How To: Calculate future value & total interest 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 56th installment in his "Excel Business Math" series of free video lessons, you'll learn how to make calculations for future value and total interest earned. ### How To: Calculate markup on cost in Microsoft 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 49th installment in his "Excel Business Math" series of free video lessons, you'll learn how to make calculations for markup on cost in MS Excel. ### How To: Calculate monthly sales with Excel's SUMPRODUCT & TEXT

Love Microsoft Excel? This clip contains a tip that just might induce you to. With this free video tutorial from ExcelIsFun, the 45th installment of his "YouTubers Love Excel" or YTLE series of free video MS Excel lessons, you'll learn how to use the SUMPRODUCT & TEXT functions together in 1 formula to sum the month's sales. Learn to love digital spreadsheets more perfectly with the tricks outlined in this free Microsoft Office how-to. ### How To: Calculate horsepower with Excel's VLOOKUP function

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 469th installment in their series of digital spreadsheet magic tricks, you'll learn how to use a VLOOKUP query to lookup values for horsepower calculation.