Category: Math Tricks

Multiplication Table Tricks!

Here’s a great video that teaches you a trick for doing your 6x 6 through 10 x 10 multiplication tables!

Check it out!

Just a bit of fun! Use your hands to work out 6×6 to 10×10. Visit www.mathswrap.co.uk for real maths, tips and techniques.

So what do you think about that?

Pretty cool eh?

Technorati Tags: , , , , , ,

Cool Math Tricks

I find it fascinating when I can learn a new trick to help with mathematical problems. So as you can imagine, I thoroughly enjoyed this article!

Cool Mental Math Tricks

The fantastic 11 rule
There is a great likelihood that many people know the 10 rule. That is, when you multiply a number by 10, you add a 0 at the end of the number. However, the 11 rule may be unknown to many. It is so easy to comprehend.
– As you multiply any two digit number by 11
– Let us take 36 for this example (3-6) and notice the gap in between them.
– Then, sum up the two digits, 3 and 6 together
– Put the result, 9 in the gap in between.
– That is simply done 39 x 11=3 96
However, there is one tricky thing that you should remember, if the result after you have added the two digits is more than9, put only the digit representing the “ones” in the gap. For example:
74×11…7_4….4 +7=11…
Put the 1 in the gap, and add 1 to the 7 to get 8, therefore, the answer to 74 x 11 = 814
How to multiply by 999, 99 or 9
Multiplying a number by 9 is just like multiplying it by 10-1.
As such, multiplying 9 × 9 is9 (10-1) whose result is 90 -9 = 81
Another example:
9 × 68… = 68 10-1)
= 680 – 68
= 612
To multiply a number by 99 is the same as by (100-1)
47 multiplied by 99….47 (100-1)
=4700-47…=4653
Multiplying a number by 1000 means the same as multiplying the same by (1000-1)
Therefore, 55 multiplied by 1000 is the same as…..55(1000-1)
=55000-55
=54945
How to squ9are two digit numbers
Take for example that you want to square 48. The first step is squaring each of the digits to get the partial results.
4 × 4 16 and 8 × 8 = 64. Then put the two digits together, 1664.
From there, you should multiply the digits of the number that you want to square….4 × 8=32
Double the resulting product to get 64
Mathematics can be a terrifying idea for many people but with these cool mental math tricks and a bit of practice to perfect them, the general knowledge and speed in math will considerably improve.

Article Directory: http://www.articledashboard.com

So there you have it – another cool math trick to add to your always-growing math resource library.

Have a great day!

To learn much more about the mental maths, mental math tricks can be found at mentalmathtricks.com/.

The Magic and The Math

I found a great article on Article Alley.com that I thought might interest some of you!

Magic Tricks Revealed: The Stunning Genius Magician

Here is a simple card trick that is based on easy math. If you can add up to ten, then you can do this trick. It may take a few minutes of practice during commercials while you are watching TV, but this trick, although deceptively simply, will have a profound impact on your audiences and friends.

This is how the trick will appear to your audience. You can create a long winded metaphor about memory skills, or Las Vegas card counting experts or something. Maybe you went on a retreat with some psychic CIA agents or something. Anything outlandish that will help to engage your audience.

They will naturally want you do give a demonstration of your magnificent skills, and you are naturally more than happy to comply. You pull out a regular deck of cards, and explain that you will ask an audience member to go through the deck and remove on card. Tell them you will only need two passes through the deck, and you’ll know their card. They choose a card, keep it, and sit back down. You flip through casually once, and again a second time, and then tell them their card like it’s no big deal.

Here’s the secret. When you go through the deck, start adding the value of each card together. But as soon as you get over ten, start over again. So if you have a 3, 5, 7 and 9, you will add them together like follows: 3 and 5 is eight, and seven puts it at fifteen, so you’d count that only as five. The next is 9,and 9 and 5 is thirteen, so you your count would be three. Go through the entire deck this way.

Once you are through, the number you have will be the number of their card. So if you end up with the number three, then their card is a three. Then you need to go through the deck once more to identify the suit of their card. Once you announce this, most people will be stunned. But this trick does look deceptively simply. But unless they know the secret math trick, nobody in any audience will be able to do this trick through sheer memory alone, despite how simple it looks. It’s actually good for if somebody in the audience claims they can do it. Simply give them the deck, and let try. When they fail, it will only make you look better.

Obviously, this trick will take some practice. You’ll need to spend a few minutes at home going through a deck and adding up all the numbers as described above. You’ll be amazed, however, how quickly you pick this up. And a side benefit to being able to do this trick quickly and easily in front of others, you’ll skyrocket your ability to do simple math in your head. That in and of itself is a great skill to have, and can be used in many other tricks to quickly amaze your friends. Have fun.

——

For simple to learn yet amazing tricks that will mesmerize any audience and quickly make you the center of attention at any party or social gathering, head on over to magic tricks revealed today.

So there you have it!

Do you think you can master this trick?

Post and let me know?

.

.

Technorati Tags: , ,

A Cool Math Trick!

Suppose you’re trying to schedule an upcoming event and you need to know the day of the week that this event will occur on. Can you do that in your head?

Sure you can! You just need to know this little trick! (Brought to us by Stephen C. Tan.)

I found this while looking through some articles at ezinearticles.com

Ultimate Mental Math Trick

Can you tell the day for any date without a calendar at hand? Is that really possible?

It is actually a simple skill that any one can learn. It is also very practical as you may always consider your availability for an activity or an event or you just need to know the day of anyone’s birthday. All you need is a little bit of practice, then you can quickly and easily tell the day of the week of practically any date in history or in the future.

Here’s the Secret

You may need to memorize some codes to learn this trick, but they are very easy to remember.

First, we assign a code number to every day of the week.

Monday – 1

Tuesday – 2

Wednesday – 3

Thursday – 4

Friday – 5

Saturday – 6

Sunday – 7 or 0

Second, we assign a code number for every month of the year. These month codes are used for every year with two exceptions. In a leap year, the month code for January is 5 and for February is 1. The month codes with the corresponding mnemonics are as follows:

January – 6 (WINTER has 6 letters)

February – 2 (2nd month)

March – 2 (You march with 2 feet)

April – 5 (APRIL has 5 letters)

May – 0 (MAY0 for mayonnaise)

June – 3 (JUN has 3 letters)

July – 5 (JULIE has 5 letters)

August – 1 (August begins with an A, the 1st letter)

September – 4 (SEPT has 4 letters)

October – 6 (Halloween TRICKS or TREATS have 6 letters each)

November – 2 (2nd last month)

December – 4 (XMAS has 4 letters)

Third, we assign a code number for every year. For example, the year code for 2011 is 6.

The Formula

Day of the week = (Month code + Date + Year Code) mod 7

Note: mod 7 indicates the remainder you get when you divide by 7.

Examples

What is the day for July 16, 2011?

Day of the week = (Month code + Date + Year Code) mod 7

Day of the week = (5 + 16 + 6) mod 7 = 27 mod 7 = 6 (Therefore, it’s a Saturday)

What is the day for December 25, 2011?

Day of the week = (Month code + Date + Year Code) mod 7

Day of the week = (4 + 25 + 6) mod 7 = 35 mod 7 = 0 (Therefore, it’s a Sunday)

Hooray! With constant practice, you are now ready to be the walking calendar. Amaze your friends, colleagues, students, teachers and everyone else.

 For further information on how to find the year code of any year, check out my blog at www.themathblog.com

You’ll need to visit Stephen’s blog to get the code for other years, but it’s a very cool trick! Don’t you agree?
.
.