Vedic / Quicker / Shortcut Math ⇒ Topic : Square any number from(2029)

Siya
 
Easy way to mentally square any number from 20 to 29
Step 1:First add the given number and the unit's digit.Step 2:Double the result obtained in step 1. Step 3:Square the unit's digit of the number given in question and place it next to the result obtained in step 2. Example 1:Find the square of 22 in 5 seconds
(22)^{2}=?
Step 1:22 + 2=24
Step 2:24x2=48_
Step 3:2^{2}=4
Now put the result obtained in step 3 in step 2,we get
Ans:484
 
 
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