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  • Added on: Nov 28 2011 08:44 AM
  • Date Updated: Nov 28 2011 08:49 AM
  • Views: 1578
 


How to multiply 55 to itself faster

Covers multiplication of 55 to 55 the easier way. :)

Posted by PiNoY on Nov 28 2011 08:44 AM
Here's a simple way on how to multiply 55 to itself faster?

We know that 55 multiply to itself can be represented by the figure :

55
x 55
====
3025

The answer is 3025.

NOW, any numbers being multiplied to itself like

55 times 55 ,

75 times 75 ,

35 times 35 or

25 times 25 ,

can have a faster answer being done from the mind. HOW??

For example? Taking 25 x 25 (25 times 25) can be taken AS

25
x 35
=====
625

NOTICED that 2 multiply to 3 is 6 then simply append 25. You will get 625. The trick is to ADD 10 to the number then proceed with FIRST NUMBER multiplication.




ANOTHER EXAMPLE for 55 multply to itself as in 55 x 55.


55
x 65
====
3025

NOTICED that 5 x 6 = 30 , so we append 25 to the number, the answer becomes 3025, which is the correct answer. Get it? Append 25 to 30 becomes 3025! So 55 times 55 equals 3025.




Enjoy! :)