Numerical exercise · ~1 min a run · free
Fuel Planning Maths
Burn rate, time and fuel, worked in your head.
Session mode
Difficulty
Auto sets the level from your recent results: up when you are acing it, down when it is too hard.
How to play
- 1Read the scenario: you are given two of burn rate, time and fuel.
- 2Find the missing value in your head, ignoring reserves.
- 3Choose the matching option.
See a worked example
Burn rate 2,400 kg/h, flight time 1 h 30 min, how much trip fuel? The pattern is rate x time, and the only real step is the time: put it into hours FIRST, so 1 h 30 min becomes 1.5 h, then 2,400 x 1.5 = 3,600 kg. Half an hour is 0.5 and never 0.30, and that single slip is what most of the wrong options on this exercise are built from. Work the same way backwards for an endurance question, dividing instead of multiplying, and add the reserve only when the question says to. Sanity-check before you pick: one and a half hours must burn more than one hour and less than two, so the answer sits between 2,400 and 4,800.
Turn burn rate and time into fuel, and back again. The same arithmetic underpins real fuel planning and shows up throughout pilot numerical tests.
About this test
About this test
What this test measures
This measures multi-step numerical reasoning with rates: combining fuel flow, time and reserves into a single answer without losing a step. Real fuel planning is exactly this, a chain of small calculations where one slip changes the whole figure.
How to improve your score
- Work the steps in a fixed order so you never skip the reserve or the taxi fuel.
- Keep rate units consistent, convert litres-per-hour and kilograms-per-hour before you multiply, not after.
- Estimate the total first, then compute, so an out-by-ten error jumps straight out at you.
Good to know
Good to know
Anchor on one hour
Fuel equals burn rate times time, so find the one-hour figure first and scale it. At 2,400 kg/h for 40 minutes, take two-thirds of 2,400 to get 1,600 kg. Converting minutes to a fraction of an hour keeps the units lined up.Trip fuel only here
These drills ignore reserves to keep the mental maths clean, so do not add contingency while practising. Real dispatch always adds contingency, alternate and final reserve fuel on top, which is a separate planning step.
Frequently asked questions
What is the core relationship?
What is the core relationship?
Why kilograms?
Why kilograms?
Are reserves included?
Are reserves included?
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