Is 3/5 greater than 1/5

Yes because lets say you have a 2 pies and you cut each in 5 pieces but you eat 3 slices of one and one slice of the other like this you can clearly see that one you ate more of. that is 3/5 because it has 3 colored in instead of 1 the slices are supposed to be equal but I drew them wrong

Yes it is, since 1/5 + 1/5 + 1/5 = 3/5. If a pizza has 5 slices and you take three, that is more than just taking one.