Fuel Calculations

Commander Alex's rocket starts with 100 units of fuel.

Launch uses 30 units. Remaining: 100 - 30 = 70 units.

Flying to the Moon uses 25 more. Remaining: 70 - 25 = 45 units.

Landing uses 15 units. Remaining: 45 - 15 = 30 units.

The fuel goes DOWN each time the rocket does something. If it reaches 0, the rocket is stranded!

**Think About It:** Total fuel used: 30 + 25 + 15 = 70. Started with 100, ended with 30. Check: 100 - 70 = 30. Correct!