Maths – Easy calculation

http://easycalculation.com/what-is-hcf.php
http://www.mathsteacher.com.au

http://www.lazymaths.com/speed-math/

http://mental-maths-trick.blogspot.in/2011/10/do-super-quick-maths-calculation-using.html

 

Ratios Calculation:

http://www.mathsisfun.com/numbers/ratio.html

 

 

 

Short cut:

http://www.jainmathemagics.com/page/5/

 

 

Calculating Square of numbers quickly…

Lets calculate the square of 54

So (54)^2 = 5^2 +4 — 4^2 = 25 +4 —-16 =29——-16= 2916

Similarly (55)^2 = 5^2 +5 –5^2=25+5——25=30———25= 3025

Similarly (56)^2 = 5^2 + 6–6^2=25+6——36= 31——–36= 3136 etc..

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