1. Mr. Stewartcleaned 15 of the 26 buses. How many are still to be cleaned?   2. It is possible to accommodate 91 cars in a parking lot. If 24 cars are already parked, how many more cars can fit?   3. A milk van started with 955 bottles of milk. It delivered 81 bottles. How many bottles are still to be delivered?   4. Paul has to repair 39 cabs. He has repaired 24. How many more does he have to repair?   5. There are 171 passengers in a train. If25 people get off at the station, how many passengers are still there in the train?