Question

2. Quick Square

If you need to square a 2 digit number ending in 5, you can do so very easily with this trick. Mulitply the first digit by itself + 1, and put 25 on the end. That is all!

252 = (2x(2+1)) & 25

2 x 3 = 6

625

Answer 1

saw this on a vedic math video. it was a riot

Answer 2

http://www.youtube.com/user/glad2teach?feature=watch

Answer 3

l like those 5's

Answer 4

thank u meverett

Answer 5

doesn't work with 95?

Answer 6

for which question u r telling

Answer 7

the quick square