Maths is simply logic. Advanced, 100%, universal truth.
Physics is applying those universal truths to try and figure out how everything works. Technically, physics is, "the study of matter, forces and energy". We don't know what matter is yet, nor do we know waht energy is. In reality, without physics we wouldn't have electricity, the wheel or telecommunications.
Chemistry is the study of matter and the way it behaves. It is normally practiced as the study of elemental atoms (anything smaller is left to physicists) and works its way up from there. From chemistry we gain what I would call the tools of the human race. This can include everything we produce, from metals to medicines and industrial chemicals to glass.
I won't comment on Biology other than to say it is simply chemistry applied to living things.
So, in my opinion:
Physics + Chemistry have an equal role to play in the development of the human race
BUT
Chemistry will always be the driving force in improving standards of living, after physics has laid the groundwork. (By groundwork I mean electricity, the lightbulb, nuclear power etc.)