Add and Subtract Numbers

How To : Con someone with the penny prediction bar trick

Check out Brian Brushwood and Scam School's Penny Prediction scam. No matter what the setup, the very best scams are the ones that let the mark think they're on top, only to get punked in the end. That's what makes the penny prediction so great! THE SETUP: reach into your po ...more

How To : Understand & Use IPv4 to Navigate a Network

You may not know it, but the IPv4 address of your computer contains tons of useful information about whatever Wi-Fi network you're on. By knowing what your IPv4 address and subnet mask are telling you, you can easily scan the whole network range, locate the router, and discove ...more

How To : Calculate standard deviation

Looking to find the standard deviation of your set of values? Standard deviation quantifies how diverse the values of your data set are, and is useful in determining how different your numbers are from each other. You Will Need: • Data • A calculator Step 1: Collect your d ...more

How To : Do long division with decimals

Video Nerd thinks that when your doing long division with decimals you should first take out the decimal. Write the number as if it didn't have a decimal. For example if the problem was 12.5 divided by 5 then you will just use 125 and divide that by 5. Next divide the first di ...more

How To : Read your friend's minds with the Book Test

In this tutorial, we learn how to read your friend's minds with the book test. First, sit by two friends and have three books with you. Have them pick a book, then write a 3 digit number on a card, then have the other person flip the numbers and subtract them. Now have the oth ...more

How To : Increase or decrease by a percentage

In this video, we learn how to increase or decrease by a percentage. First, to increase you will need to find what the percent of the number is. To do this, you will find 10%, which should be very easy. As soon as you've found this, you can add or subtract to find the percent ...more

How To : Convert Celsius to Fahrenheit

Can't remember how to convert Celsuis temperatures to Farenheit? If your old science lessons are escaping you, then your answer is here. Use the simple formula outlined in the steps in this video to make the proper conversion every time. Step 1: Multiply by 2 Multiply the tem ...more

How To : Count cards in Blackjack easily

So how does a card counter keep track of the cards in blackjack? While there are many different systems and variations, counting cards is usually as simple as adding and subtracting the number 1. Subtract one when a high card is dealt and add one when a low card is dealt. The ...more

How To : Perform Mathemagic magic tricks with math

This cool trick involves a little math, but you won't believe the results! Sometimes we use materials that require adult supervision... like scissors, so make sure you have friends and family around whenever you do magic tricks. You will need two sheets of paper and a black ma ...more

How To : Do the calculator prediction trick

Have some time to kill between classes? Entertain your friends, or make new ones with this number prediction trick. Just make sure you have a calculator on hand and you’re ready to bring joy and amazement to the table. Your friends will think you can read minds when you use o ...more

How To : Use simple formulas to do math in Excel 2007

Take a look at this instructional video and learn how to use simple formulas in Microsoft Office Excel 2007 to add, subtract, multiply, and divide. For example, you can use a prewritten formula called the SUM function to find totals, such as your total monthly expenses. Excel ...more

Hack Like a Pro : The Basics of the Hexadecimal System

Welcome back, my novice hackers! It has become clear from some of your questions that quite a few of you are unfamiliar with the hexadecimal system, or simply, hex. The hexadecimal system is used throughout computing and if you have never studied this Base16 numering system, ...more

How To : Subtract with borrowing

For people who are learning basic math skills, this video will show you how to subtract larger numbers which involve borrowing. If the top number on your rightmost digit is smaller than the number before it, you will need to borrow from the column before it. To do this, you wi ...more

How To : Subtract fractions

Fractions are confusing, aren't they? They're numbers, but they're not really numbers and they're also pieces of numbers..fractions are a lot of things. When you begin working with fractions, you will need to know how to add and subtract them. In this tutorial, math teacher Mr ...more

How To : Work with decimal numbers in prealgebra

You can do simple decimal calculation with out using a calculator once you understand the basic concept of decimals. In decimal equations when you have various operations between decimal numbers, you have to go by the order of operations in simplifying it. The order of operati ...more

How To : Subtract fractions with common demoninators

A simple video showing how to subtract fractions with common denominators. The denominators is the bottom number of a fraction and the numerator is the top number. So in the fraction of one half 1 is the numerator and 2 is the denominator. If you have fractions with same denom ...more

How To : Do long division

For anyone who has ever struggled with long division, this video offers some tips on how to perform this seemingly daunting task with relative ease. The example provided in this video is a very useful one and by following the steps of this video, you will be able to do long di ...more

How To : Play Scrabble

Everyone loves Scrabble, but not everyone knows how to play the game properly. Yes, there is a set up rules that come with each game, but who actually wants to read them? Isn't it better to learn from a more visual approach? This video will teach you the basics of gameplay. I ...more

How To : Use a protractor in geometry

Omar, Hayley, Gary, and Autumn teach us how to use a protractor. They give a bit of information from About.com on the history of protractors. They are used to measure angles. The first protractor was used to help with navigation and invented in 1801. To measure an angle, line ...more

How To : Solve a system of equations in algebra

In this math lesson you will learn how to solve a system of equations. Watch the following video to learn how to translate a word problem into a system of linear equations. Two linear equations considered in the same time form a system of linear equations. A system of linear ...more

How To : Solve inequalities with fractions in algebra

Solving math inequalities with fractions is easy when applying the rules presented in this video. • When you add or subtract the same number from each side of an inequality, the relationship between the two sides does not change. • When you multiply or divide each side of an ...more

How To : Study

Learning Style What kind of learner are you? There are three different ways people learn: Auditory learner: A person who learns best by listening. This type of person will benefit best by finding someone to study with, to ask each other questions, and to read the study mater ...more

How To : Master SCRABBLE & Win Every Game

SCRABBLE. To some it's just a game, but to me it's life or death. Well, not really, but it feels that way anyway. On a normal weekend, a game becomes much like Jon Thomas' "friendly game of death Scrabble." Video: . When I'm playing a game of SCRABBLE, my friends are not frien ...more

How To : Use Table Styles in Microsoft PowerPoint: Mac 2008

Sure, you can make boring tables inside PowerPoint 2008 for Mac, but who wants to add that dull element to their slideshow presentations? Nobody! Tables can be more than just numbers, they can be eye-catching and visually striking. The Microsoft Office for Mac team shows you j ...more

How To : Understand adding and subtracting fractions

The video creator attempts to teach us how to add and subtract fraction. He goes very slowly and assumes that the viewer only has a very basic knowledge of math. He starts with a division of a pie. If we were to divide a pie into four pieces, you would get four pieces of a pie ...more

How To : Repair a skewed door with This Old House

Watch this video from This Old House to learn how fix a unbalanced door. Steps: 1 Close door and check the spacing at the top and latch-side of the door. 2 Determine which hinge must be shimmed to adjust door and create even spacing. 3 Remove appropriate hinge from door and j ...more

How To : Add consecutive integers in math

Want to know how to sum a series of consecutive integer numbers (e.g., 1+2+3+4+5)? You're in luck. 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 ...more

How To : Use the "add" composite mode in Final Cut Pro

Check out this quick tip for Apple's Final Cut Pro. See how to use the "add" composite mode in Final Cut Pro. Footage Firm has given DV Professionals access to free footage of a numbers graphic. If you want to build up a background using this free footage with only Final Cut ...more

How To : Program in Context Free

In my free time, I like to program in an image programming language called Context Free. You can download it at www.contextfreeart.org for free. The first thing to know about Context Free is that there are three basic shapes to which the program will understand and respond. T ...more

How To : Change fractions to decimals

In this tutorial, we learn how to change fractions to decimals. Once you learn how to do this, it can help you learn more levels of math. Start out with easy problems and work your way up to more difficult ones. First, try rewriting the equation. Take your top numerator and di ...more

How To : Use Path Finder Shape Modes in Illustrator

This Adobe Illustrator tutorial demonstrates the basic shape modes in path finder (add, subtract, intersect, and exclude), and shows how to use the direct selection tool and expand features of Illustrator. Finally, a bubble box is created (for the Yahoo Map project) with the a ...more

How To : Customize the Ribbon bar in Microsoft Excel 2010

Learn how to add numbers using the SUM and AutoSUM functions within Microsoft Excel 2010. 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 2010 workflow, you're ...more

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