math
posted by sheila on .
write 5.5 recurring as a fraction or mixed number in simplest form.

.55555 = 5/9
So, 5.5555 = 5 5/9 = 50/9
it's handy to know that .nnnnnn = n/9
It's easy to show that .55555=5/9, since if
n = .555555
10n = 5.55555
10nn = 5.55555.55555 = 5
9n = 5
n = 5/9