Multiply any two numbers from 11 to 20 in your head Take 15 x 13
Place the larger no. first in your mind and then do something like this Take the larger no on the top and the second digit of the smaller no. in the bottom.
The rest is quite simple. Add 15+3 = 18 . Then multiply 18 × 10 = 180.
Now multiply the second digit of both the no.s (ie; 5 × 3 = 15) Now add 180 + 15.
Here is the answer 180 + 15 = 195 Think over it. This is a simple trick. It will help you a lot.
Notes
Vedic Maths - Notes
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39. Multiplying two 2 digit numbers difference of 2
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47. Multiplying two 2 digit numbers difference of 10
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