@raprap,
Quote:I'll bite
75*75=(70+5)(70+5)=70*70+2*70*5+5*5=4900+700+25=5625
38*32=(30+8)(30+2)=30*30+(8+2)*30+8*2=900+300+16=1216
13*11=130+11=141
2312/9=2304/9+8/9=256+8/9
Rap
(Sorry for my lateness on this)
Ok, Thanks! Now we will start with:
75 x 75=?
In Vedic math, we use 16 basic Sutras or 'Word Formula' to solve mathematical problems.
In this case we use the sutra;
Quote:By One More Than The Previous Digit
wel, we ha 75 x 75, so the Previous Digit is of course 7.
we add then 1 to 7 (One More) and multiply them (By) , 7x8=56.
We now, because of the 5 at the end the end will be 25,
so
75 x 75=(7x8)/25 7x8=5625
This takes a few second yo do in your head.
or do you prefer:
Quote:75*75=(70+5)(70+5)=70*70+2*70*5+5*5=4900+700+25=5625