1. Mr. Buffetcleaned 13 of the 31 buses. How many are still to be cleaned?   2. It is possible to accommodate 100 cars in a parking lot. If 37 cars are already parked, how many more cars can fit?   3. A milk van started with 843 bottles of milk. It delivered 20 bottles. How many bottles are still to be delivered?   4. Gary has to repair 38 cabs. He has repaired 18. How many more does he have to repair?   5. There are 195 passengers in a train. If67 people get off at the station, how many passengers are still there in the train?