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

adityamahajan

Cool goIITian

Posted on
12 Feb 2012 12:14:31 IST

Posts: 47

12 Feb 2012 12:14:31 IST

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2727

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

Engineering Entrance , JEE Main , JEE 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....!!!

Comments (9)

viresh kr singh

New kid on the Block

Joined: 13 Feb 2012 14:25:40 IST

Posts: 1

13 Feb 2012 15:06:16 IST

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Good effort..deserve appreciation

adityamahajan

Cool goIITian

Joined: 28 Oct 2011 13:18:05 IST

Posts: 47

14 Feb 2012 14:08:09 IST

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thanku vikesh..!!!!

chanda

New kid on the Block

Joined: 15 Feb 2012 14:58:26 IST

Posts: 1

15 Feb 2012 15:19:58 IST

Like 1 people liked this

nyc ;)

Deevita Agarwal

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Joined: 6 Dec 2009 17:07:03 IST

Posts: 304

15 Feb 2012 20:32:33 IST

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vry nice

Deepanshu Sehgal

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Joined: 4 Sep 2011 22:42:41 IST

Posts: 11

15 Feb 2012 20:47:05 IST

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aausum!dudeeeeee

sudhindra shenoy

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Joined: 30 Aug 2011 22:55:38 IST

Posts: 359

16 Feb 2012 07:46:52 IST

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appreciable

Sumiran agrawal

Scorching goIITian

Joined: 20 Jul 2011 20:42:16 IST

Posts: 256

22 Feb 2012 17:00:09 IST

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Nice trick aditya!!!

hemang

Blazing goIITian

Joined: 27 Dec 2010 11:39:18 IST

Posts: 1508

23 Feb 2012 15:09:26 IST

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

Waseem Ahmad Baba

New kid on the Block

Joined: 10 Jan 2012 11:41:17 IST

Posts: 3

1 Mar 2012 13:38:10 IST

Like 0 people liked this

huh! nice but time consuming.

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