Zero - 3 (Mutltiplication)

Dear All, 

Continuing with the series on simplifying mathematics.

Multiplication:-

Base number multiplication. People look at it oddly but the system is more than centuries old.

Base number 10.

+2  +7

12 x 17 = 19 / (2*7) = 19 / 14 = 20 / 4 = 204.

We put the differences from 10 above the numbers ie +2 & +7. There are a left side and right side of the answer. For the left side we add diagonally, 12+7 or 17+2 ie 19. For the right side we multiply the differences ie 2*7=14. Only one digit is to be kept on the right side, so we carry forward 1 out of 14.

So, finally we get 20 on the left side and 4 on the right side. And the final answer is 204. Rather than memorizing tables, we do have an alternative. We do earn high degrees but find it difficult to fine-tune the basics.

Some more examples:-

+5 +8

15 x 18 = 15+8 / (5*8) = 23 / 40 = 270.

 

+6 +7

16 x 17 = 16+7 / (6*7) = 23 / 42 = 272.

So, by this method, multiplication tables up to 20 are covered. Please practice this so one does not have to mug up tables again. Generally, it is advisable to create a multiplication table like this.

X     11    1 2     13     14     15     ….     20

11   121   132

12   132   144   156   168

…

20 

 

We go on filling in our free time. Only one or two times we write to understand the syntax. Once that is done we put the pens down. Its easily done in the mind.

Note:- The actual expansion of the method is something like this.

+2  +4

12 x 14 = ?

Adding diagonally we get 12+4 = 16. We multiply by base 10 to get 16*10=160. Now we add the result of multiplication of differences ie 2*4=8 to this to get 160+8 = 168. If one does not understand this expansion, one can always follow the method given in the beginning.

Vedic Mathematics is a blessing. We don’t have to memorize all the Sutras (formulae) but understand them. All the struggle is taken out, and the joy of numbers is retained. All the techniques are fool-proof. In other words if one follows them, there can be no mistake. They are accurate on the spot.

The above methods are time-tested and written impromptu. We don’t refer to big books to write simple articles. The whole idea of the outreach being to produce more human computers like Shakuntala Devi. God bless. 

Kind Regards,

jeeves.