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Thursday, February 26, 2004 - 04:01 PM
Posted by kayer35
58252 Reads
Here's how you can directly write down the answer to any number multiplied by 11. Thursday, February 26, 2004 - 03:57 PM
Posted by kayer35
95522 Reads
Got 5 minutes to spare? That's all the time you need to learn how to quickly multiply two numbers from 11 to 19 in your head. Tuesday, October 28, 2003 - 03:15 PM
Posted by PiInTheFace314
72416 Reads
Like they said, it’s hip to be square! Here are a few easy tricks that’ll make squaring numbers much faster.Tuesday, September 30, 2003 - 11:58 AM
Posted by deud
98623 Reads
If you want to add all the numbers from F (First) to L (Last), here is an easy way to do it, and many times can be performed in your head.Friday, September 12, 2003 - 09:32 AM
Posted by deud
56200 Reads
Sometimes a difficult percentage calculation can be made easy simply by swapping the two terms. Tuesday, April 22, 2003 - 06:58 AM
Posted by Einstein323
35989 Reads
To multiply any three-digit number that has similar digits (e.g. 333) by eleven, you can apply certain rules. These following rules might be complicated and you might find no use for them, but they're quite interesting.Friday, March 14, 2003 - 06:08 PM
Posted by clay
128467 Reads
If someone cubed a two-digit number on a calculator and gave you the result - but not the original number - could you extract the cube root? With this trick, you'll be able to do just that - instantly!Tuesday, February 11, 2003 - 01:33 PM
Posted by clay
43765 Reads
Here are a few recipes for spicing up your squaring excitement. They're not necessarily easy or quick, but I think they're worth knowing if you're into math tricks.Tuesday, February 11, 2003 - 01:04 PM
Posted by clay
120555 Reads
Ever wonder how to determine the square root of a number without the aid of a calculator? Believe it or not, people used to do this. Here's one method for doing so.Tuesday, February 11, 2003 - 09:01 AM
Posted by clay
131362 Reads
Multiplication involving certain numbers can be computed using methods other than just standard multiplication. Sound confusing? Check out these nine tricks and see what I mean.Monday, February 10, 2003 - 04:57 PM
Posted by clay
49928 Reads
Here are some interesting ways to perform division operations by first using multiplication and then dividing by a multiple of 10.Monday, February 10, 2003 - 03:49 PM
Posted by clay
70965 Reads
Using your fingers to perform math computations is known as Chisenbop. Why it's called "Chisenbop", I have no idea. But it works. So loosen up your fingers and give it a try.Monday, February 10, 2003 - 03:37 PM
Posted by clay
56316 Reads
How can you quickly know if one number will divide evenly into another number, leaving no remainder? For example, will 3 divide evenly into 2,169,252? Well, I wouldn't have brought the subject up if I didn't know some curious shortcuts...Monday, February 10, 2003 - 03:24 PM
Posted by clay
56853 Reads
What day of the week will May 12, 2034 be? What day of the week was May 12, 1298? Here's a neat algorithm that will tell you:Monday, February 10, 2003 - 02:53 PM
Posted by clay
82339 Reads
Use these calculator tricks to impress and astound your friends!Monday, February 10, 2003 - 01:54 PM
Posted by clay
23184 Reads
Here are some quick rules for building boxes with specific capacities.
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