Vedic / Quicker / Shortcut Math ⇒ Topic : Square number from 10 to 19

Siya
 
Easiest method to find the square of any number between 10 and 19
Step 1: First add the given number and the units digit .
Ex1:Find the square of 13 in 5 seconds
(13)^{2} = ?
Step 1: 13 + 3 = 16_
Step 2: 3^{2} = 9
put the result obtained in step 2 in step 1 we get
Ans=169
Ex2:Find the square of 16 in 5 seconds
(16)^{2} = ?
Step 1: 16 + 6 = 22_
Step 2: 6^{2} = 36
put the result obtained in step 2 in step 1 as shown below
22_  
 
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