[math-fun] Repeating decimal expansion

Hello Math-Fun, à propos the table "Repeating decimal expansion", here: http://thestarman.pcministry.com/math/rec/RepeatDec.htm ... I read that: 1/2 = 0.5 1/4 = 0.25 1/5 = 0.2 ... but is this equivalent to: 1/2 = 0.499999999999999999999999999999... 1/4 = 0.249999999999999999999999999999... 1/5 = 0.199999999999999999999999999999... And what about: 1/3 = 0.6666666666666666666666666666666... ... re-written as: 1/3 = 0.6599999999999999999999999999999... 1/3 = 0.6666659999999999999999999999999... 1/3 = 0.6666666666666666666666599999999... I'm confused. Best, É.