1. Mr. Stewart  cleaned 87 of the 91 trucks. How many are still to be cleaned?   2. A truck drove under a bridge 7 m high. There was a gap of 4 m between the top of the truck and the bridge. How many meters was the truck in height?   3. A milk van started with 26 bottles of milk. It delivered 21 bottles. How many bottles are still to be delivered?   4. Steve  has to repair 25 vans. He has repaired 7. How many more does he have to repair?   5. Mrs. Martin has 4 gallons of fuel in her car. Her fuel tank has a capacity of 7 gallons. How many gallons are needed to fill the fuel tank?