Hey Mark,
From what I've read, there are some more specific mathematics kind of tests that relate to aircraft, calculating range etc. It's beneficial to get an idea of thinking in terms of lb of fuel, nautical miles, knots etc.
i.e.
You have 620lb of fuel on board and a current fuel flow of 96lb/hr. You are 96nm from your destination and travelling at 84 knots ground speed. How much fuel will you have left when you reach your destination?