13 is gonna be 13 regardless so lets look at the .3333... part
lets rename it:
A = .3333333 ;
A*10 = 3.333333
10A = 3.33333
- A = .33333
----------------
9A = 3.000000
A = 3/9
OpenStudy (amistre64):
the shortcut is simply take the repeating part; and put that many 9s under it.
.12312312312312... ; we see that the 123 part is repeating and it has 3 digits
123
--- is its fraction .. reduce as needed
999
OpenStudy (anonymous):
ok thanks
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