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.
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.
Most of the time, when I’m bored during math class, I play with my calculator to satisfy my boredom. Recently, I've discovered that when multiplying any number by 11, 111, or any number similar to it, that it has a pattern (though I guess everything in math has a pattern). I don't know if this technique is original, because I didn't read anything about this. It's just mere observation. If it’s a tried and true technique, let me know.
In this video the instructor gives you sample as of how to SLEP long multiplication. You start by breaking the numbers up to simpler forms. If you have a two digit number that your multiplying by a another two digit number you multiply the first two digit number and then buy the second digit of the second two digit number. You have to remember to carry the remainders. You then add your two multiplicative lines together giving you the sum. this can be done to cover any set of multi-digit numbe...
Lyndapodcast, teaches you, via InDesign expert and graphic designer Michael Murphy, teaches you how to specify exact match and range in GREP using InDesign. Use CTRL + F and then choose the GREP tab. Go to the special characters menu to the right and under Wildcards choose Any Digit. After \d you can add \d again, but you should use \d[2] for double digits. For two or more digits use \d[2,]. You can also use \d[3,] for three or more digits. The last operation is \d[2,4] which gives you a mini...
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!
This video presents a mathematical puzzle which is to be solved by the viewer. The solution is posted in an alternate video, but this video presents the problem of a four digit number which is the square of a smaller number. The first two digits of the square are the same as each other and the last two digits are the same as each other as well. The video calls for the viewer to find the integer whose square is this four digit number without the use of a calculator, although abacuses are allow...
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 other person reverse the digits and add numbers again and add them all together. Now, have the other person circle the lat digit and open the page and word of the digit. Have the people think of the word they come up with a...
The roll-out of T-Mobile's hotly anticipated 'Digits' service is now underway. For those unfamiliar with what could be the un-carrier's next killer app, 'Digits' is basically a combination of Google Voice and AT&T NumberSync. With it, T-Mobile customers can use their number across any phone, tablet, wearable, or PC. That means you can give out your phone number and answer the call on any device you like.
Have an old bike combination lock that you can't remember the code for? If it's a simply four-digit cable lock, you can easily figure out the combination with a quick peck-and-go method. Best of all, this technique doesn't require any tools or special know-how, and let's you reuse the cable lock again versus just damaging it with bolt cutters. All you need is a bit of patience and you'll have your figure out your combo in no time.
In this video, we learn how to understand two digit numbers in Arabic. Start off by having numbers written out in Arabic on a screen in front of you. Guess what these numbers are and how you say them. After this, have the answer come out on how to say the number and what it is, so you know if you were right or not. The pronunciation to these numbers is key, because they can end up sounding incorrect or you could make a whole new world with the slip of just one letter. Practice this for the ba...
Master Lock combination padlocks have been known to be vulnerable to an attack that reduces their 64,000 possible combinations down to 100. I've devised a new attack for cracking any Master combo lock that simplifies the process and reduces the amount of work down to only 8 combinations.
With this free video math lesson, you'll learn how to do long division with double and triple-digit numbers. With mathematics, as with anything else, not everyone progresses at the same rate. Basic math is no exception. Happily, in the age of Internet video tutorials, this isn't a problem. Those who progress quickly can go beyond what's being taught them and those who are struggling likewise have all the time in the world to catch up.
Jacky Liao and Tony Liao describe the main attributes of Sudoku and provide tips on how to solve the puzzle. Sudoku is a popular puzzle just like crossword. It is a puzzle of a 9X9 square sub-divided into 3X3 squares. You have to fill each column and row with digits 1 through 9 in any order. Each 3X3 sub-square must include all digits 1 through 9. Every Sudoku game starts with a few of the squares filled in. The more squares that are filled in the easier it is to play. As you fill in the squa...
This video tutorial shows you the next step as a follow up from the last video, this one teaching you how to carry numbers so that you can add multiple digit numbers. When learning anything you want to go through and do a warm-up so that you get your mind ready to learn something new. Using the places in mathematics it teaches you the easy way to learn or teach advanced addition. After watching this video you should be able to go through any addition regardless of how many places there are in...
You likely all know the 10 rule (to multiply by 10, just add a 0 behind the number) but do you know the 11 rule? It is as easy! You should be able to do this one in your head. Learn how to easily multiply any two digit number by 11. Easy way to do math fast!
This medical how-to video demonstrates how to anesthetize with the digital block technique. The digital block is a simple anesthesia procedure used to numb the fingers or toes. Watch as they show how to apply a ring block of local anesthesia to a digit.
New to 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 Excel tutorial from ExcelIsFun, the 237th installment in their series of digital spreadsheet magic tricks, you'll learn how to
Want to divide a two-digit number into a bigger number still? Learn how. 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 do more adva...
For people who are learning how to multiply, this video will show you easily how to multiply numbers with more than one decimal place. Starting with your rightmost digit on your bottom number, multiply with your top number as if you were doing a simple multiplication problem. After you have finished, place a 0 below the rightmost number of your product as a place holder and continue to multiply with your next digit in the bottom number. After you have completed this for all your numbers, you ...
This video explains how to easy add decimals. Adding decimals can seem to be a tedious job, and a single mistake can result in a completely different number. In reality, it is quite easy, and with a good method and some practice it can be done quickly. Write the two sets of numbers out, lining them up in columns. Keep the decimal points on top of each other and line up the non-decimals with non-decimals and the decimals with decimals. Start at the right-most column and add it up. If it become...
Liquid Pop Collective put this video out some years ago; adding digits to your Liquid makes it far more stylish and sophisticated than just relying on the old hand-chasing alone. This is an advanced hand-chasing technique.
This video shows the method to multiply two digit numbers using the grid method. First make a grid of three rows and three columns. Put a cross in the first row and first column or the (1,1) position. Separate the ones and the tens in the number. In our example 43 is broken into 40,3 and 56 is broken into 50,6. Put these numbers in the remaining places in the first row and first column. Now multiply every number with the other and place it in the corresponding location in the grid. In our exa...
In this tutorial the instructor shows how to perform a long division through an example. He gives a simple method where takes the first left most number, with minimum possible digits that can be divided by the divisor, and tries to divide it by the divisor and this gives the quotient. Now he shows how to multiply the quotient with the divisor to get a value which is to be subtracted from the original divided number. Now in the third step he shows how to bring down the next digits and asks to ...
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 division easily. Starting from the right side of the number which is being divided, add 0's as place holders until you arrive at a number which can be divided by the number you want to divide by. Perform this one simple di...
With over 10,000 possible combinations, a four-digit passcode may seem secure, but it's fairly easy for someone to crack your code—no matter how clever you think it is. Luckily, there are many other options for securing your iPhone's lock screen—especially if your running iOS 9.
2 + 2 = 4. That's about as much math as I can handle without a calculator on a daily basis. I literally hate doing math more than anything in life, mostly because I'm not good at it—and I hate doing things I'm not good at.
You've probably noticed how we like to stress the importance of a strong password. After all, there are still people out there who continue to use passwords like 123456 and even just "password". But passwords aren't the only barriers that protect your information.
This is a short video for numbers 1 to 10 in the Polish language. It should help to understand how Polish should be pronounced as well as to learn some of the first ten digits.
While there isn't as much personal data residing on your Apple Watch as there is on your iPhone, it's still a good idea to set a passcode for it and lock it up when you're not using it. If you don't, while it's charging or otherwise off your wrist, others may be able to sneak a peek at your activity, messages, emails, and other personal details. Plus, you won't be able to use Apple Pay without one.
This is an interesting trick to solving multiplication problems. It involves multiplying 2 double-digit numbers with hand drawn, crisscrossing lines.
In this tutorial, we learn how to fix error code 86420 and change your NAT type to open. First, go to the website to change the settings for your Linksys router. Next, go to the applications tab that says "applications and gaming". After this, go to port range forwarding, then write in a name next to where it says "application name". Under "start" write the number 1 and under "end" write 6553, then keep "both" marked under protocol. Next, enter in the last 3 digits of your console's IP addres...
New to Excel? Looking for a tip? How about a tip so mind-blowingly advanced as to qualify as a magic trick? You're in luck. In this Excel tutorial from ExcelIsFun, the 477th installment in their series of digital spreadsheet magic tricks, you'll learn how to prevent Excel from displaying a 13-digit number ID in scientific notation using the number formatting tool.
Getting through the iPhone's 4-digit passcode may seem almost impossible, but it is actually quite easy. Permanently remove any passcode with this simple trick. But beware: everything else will be lost on the device as well! This will let you unlock someones password on an ipod or iphone touch.
The supra combination lock box has been one of the most trusted door locks for the past forty years, and is commonly used by real estate agents for protecting their houses. Generally a supra combination lock operates with a four-digit password.
Even though I am not the best locksmith in the world, the four-digit #175 model Master Lock is so easy to pick that all the hardened steel in the world isn't going to protect your belongings.
This is a short video for numbers 11 to 20 in the Polish language. It should help to understand how Polish should be pronounced as well as to learn some of the second ten digits. It also goes over how to say how old you are in Polish.
If you've received a spam message in Signal Private Messenger, you know that anyone can contact you as long as they have your linked phone number. But when it comes to the people you're actually trying to have a private conversation with, how do you know it's really them?
One feature that the majority of iPhone owners utilize is the device's passcode security lock. And while iOS 8 ushered in device customizations that add a whole new level of personalization on the Apple's mobile devices, the lock screen passcode page remains frustratingly the same.
Like Costco's price codes or the tags on your bread, the numerical codes printed on those sticky little fruit and vegetable labels can reveal a lot of information to us consumers. Once you understand the codes, you can look at that little label (also known as PLU, or "price look up" label) and know whether the produce you're about to buy or eat was treated with pesticides, genetically modified, both, or neither. Before we go any further with deciphering the codes on these labels, let's take a...
What is Programming? Why need to learn? How to get started? Which language to choose? While surfing web, you must be encountering various softwares, games, etc. and might be thinking to make one, but don't know where to start. Here, I am starting series in Programming.