Vedic / Quicker / Shortcut Math ⇒ Topic : Multiply Any Number by 13

Pranav
 
To multiply any number by 13, we "Treble each digit in turn and add its right neighbour". Step I. Step II. Step III. Step IV. Last Step. The answer is 1,23,279. Practice Question Solve the following: (1)35609 X 13 (2)11123009 X 13 (3)456789 X 13 (4)22200007 X 13 Ans : (1) 462917 (2) 144599117 (3) 5938257 (4) 288600091  
 
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