29.15 into 100 is well 3.430531732418525 so you cant really put it in a fraction.
2915
2.915 is a fraction. It is a fraction in decimal form rather than in the form of a ratio. However, that does not stop it being a fraction. And, since it is a decimal fraction, there is not another simpler decimal form. Its equivalent, in rational form, is 2915/1000. You can simplify this rational fraction if you so wish.
166 turned into a fraction = 166/1
66 turned into a fraction = 66/1
30 turned into fraction form = 30/1
decimal 3 turned into a fraction = 3/100.3 * 10/10 = 3/10 in fraction
2915
-64 in fraction = -64/1
20 into a fraction = 20/1
0.25 = 1/4 as a fraction.
0.3 = 3/10 in fraction
2.71 = 271/100 in fraction