a trick to calculate square of any number orally...

Cool goIITian

Posted on
12 Feb 2012 12:14:31 IST
Posts: 47
12 Feb 2012 12:14:31 IST
13 people liked this
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a trick to calculate square of any number orally...
Engineering Entrance , JEE Main , JEE Main & Advanced , Mathematics , Algebra , Analytical Geometry , academic

 u can calculate the square of any number dis trick which is based on d following formula-

 

ohkk....so d trick is...

let say we have to find the square of 11(m taking a simple example first)..

1.v find the nearest multiple of 10 to dat no.....like fr 11 it is 10...for 19 it is 20 and so on........

2.now find the difference bw dat multiple of 10 and dat no...and add dat difference to d no of which we have to find d square...ie for 11....

difference bw 10 nd 11 is 1..v add 1 to 11=12..

3.now multiply d new no which v got by adding d difference(12) with dat nearest multiple of 10 which v found at first step..

ie 12x10=120

4.now add the square of difference to it...

therefore our answer is 120+1=121

some egs are given below-

1.sq of 23=(23+3)x20+9=529

2.sq of 31=(31+1)x30+1=961

3.sq of 44=48x40+16=1936

******if u have to find square of any no which is bw 25-30 or 35-40 or 45-50 or 55-60 nd so on...

second step will be changed....we will subtract the difference...not add.....

egs-

1.sq of 29=(29-1)x30+1=841

2.sq of 36=32x40+16=1296

i hope i helped u......pls let me knw dat were u able to get this trick or not.....i can help u again....!!!

 

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Comments (9)


New kid on the Block

Joined: 13 Feb 2012 14:25:40 IST
Posts: 1
13 Feb 2012 15:06:16 IST
1 people liked this

 Good  effort..deserve appreciation


Cool goIITian

Joined: 28 Oct 2011 13:18:05 IST
Posts: 47
14 Feb 2012 14:08:09 IST
0 people liked this

thanku vikesh..!!!!

New kid on the Block

Joined: 15 Feb 2012 14:58:26 IST
Posts: 1
15 Feb 2012 15:19:58 IST
1 people liked this

nyc ;)

Blazing goIITian

Joined: 6 Dec 2009 17:07:03 IST
Posts: 309
15 Feb 2012 20:32:33 IST
3 people liked this

vry nice

New kid on the Block

Joined: 4 Sep 2011 22:42:41 IST
Posts: 11
15 Feb 2012 20:47:05 IST
0 people liked this

aausum!dudeeeeee

Blazing goIITian

Joined: 30 Aug 2011 22:55:38 IST
Posts: 359
16 Feb 2012 07:46:52 IST
0 people liked this

appreciable

Scorching goIITian

Joined: 20 Jul 2011 20:42:16 IST
Posts: 256
22 Feb 2012 17:00:09 IST
0 people liked this

Nice trick aditya!!!

Blazing goIITian

Joined: 27 Dec 2010 11:39:18 IST
Posts: 1508
23 Feb 2012 15:09:26 IST
0 people liked this

hmmm.good. but vedic mathematics ke tricks are better.

New kid on the Block

Joined: 10 Jan 2012 11:41:17 IST
Posts: 3
1 Mar 2012 13:38:10 IST
0 people liked this

huh! nice but time consuming.



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