Question

Write as a percent. Round to the nearest tenth of a percent.
3/7

Answer 1

\[ 42.8571 = 42.8 \% \]

Answer 2

42.9%

Answer 3

Chriss explain it me .. tenth means one place after decimal right ?

Answer 4

btw I think it will be 42.8 since the nth digit is 5 and 8 is even ..

Answer 5

right, so a decimal can be converted to % just by the first 2 places after the decimal

Answer 6

I've never heard that bit about even digits... I've always round up from 5

Answer 7

I am using http://en.wikipedia.org/wiki/Rounding#Round_half_to_even but there is also a convention of round half to odd ( http://en.wikipedia.org/wiki/Rounding#Round_half_to_odd)

but this is barely used.

Answer 8

It's the first time I've ever heard anything but round up from 5 in my 42 years of life, but I just looked it up too and see it in wikipedia. I dont like it though because if you use say round to odd, then 8.5 and 9.5 would both round to 9 or round to even the 8.5 rounds to 8 while 9.5 to 10... I don't know... it just seems weird to me.

Answer 9

Have you taken numerical analysis before in university? :) And also round half to even is always used unless it makes things looks wrong like in 0.5 and many other cases.