1. Mr. Jacksoncleaned 18 of the 42 buses. How many are still to be cleaned?   2. It is possible to accommodate 122 cars in a parking lot. If 74 cars are already parked, how many more cars can fit?   3. A milk van started with 618 bottles of milk. It delivered 63 bottles. How many bottles are still to be delivered?   4. Graham has to repair 44 cabs. He has repaired 20. How many more does he have to repair?   5. There are 178 passengers in a train. If64 people get off at the station, how many passengers are still there in the train?