Thursday, May 3, 2012

Squaring a 2-digit number which is between 25-50

Find the Square of 43
Step-1: find the difference(d) with 50==>43 is 7 less than 50 so d=7
Step-2:find the square of difference(d)  ==> Square of 7 is 49,so it is our 1st part.
Step-3: Now find difference of  25 and 'd' ==>25-7=18, it is second part.
              So our answer is 1849
Example:Find The Square of 38
Step 1: 38 is12 less than 50 so d=12
Step 2:Square of 12 is 144,but we have to write it in 2 digit means 44 and 1 carry
Step-3:25-12=13 and 1 carry ==>13+1=14
            So our Answer is 1444

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