1.3
is, of course
1 and 3/10
so, (10*1+3)/10
= 13/10
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As a fraction .0013 = 13/10000
13/10 or 13 / 10
13 is a whole number. One way to write it as a fraction is 13/1.
-13/1...i think o.O
Divide the fraction 13/15 13 divided by 15 equals 0.87