Korean Job Discussion Forums

[huck]

So, I was lying in bed this morning, and random thoughts were going through my head....I became stumped by basic addition.

1/2 + 1/2 = 1

.50 + .50 = 1

right? simple.

But 1/3 + 2/3 = 3/3 = 1

.33333 (repeating) + .666666(repeating) = .9999999 (repeating)

.99999 isn't 1. so is 3/3 approximately 1, and not exactly 1?

same thing with 1/9 + 8/9 = 9/9, which is supposedly 1.

but .1111111 + .88888888 = .999999999

where does the extra tick come from?