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Monday, 13 January 2014

Square A No.(100-200) On Finger Tip...

Step 1: Choose the last two digits of the no. and add it to the no.
Step 2: Multiply 100 with the above result.
Step 3: Now Square the last two digits of the no.
Step 4: Add the values obtained in Step 2&3
              This is the required Result.
This Squaring concept is applicable only for three digit numbers from 100 to 200.
For Eg. :-
Consider Squaring 122
Step 1: Choose the last digit of '122' and add it with the given number 122
            =122+22
            =144
Step 2: Multiply 100 with above result 144
            =144 x 100
            =14400
Step 3: Square 22
            =22 x 22
            =484
Step 4: Now, add the values obtained from step 2 and step 3.
            =14400 + 484
            =14884
Hence, Result 
             122 x 122 =14884