1. Mr. Moorecleaned 22 of the 45 buses. How many are still to be cleaned?   2. It is possible to accommodate 99 cars in a parking lot. If 50 cars are already parked, how many more cars can fit?   3. A milk van started with 481 bottles of milk. It delivered 76 bottles. How many bottles are still to be delivered?   4. Robert has to repair 33 cabs. He has repaired 21. How many more does he have to repair?   5. There are 201 passengers in a train. If54 people get off at the station, how many passengers are still there in the train?