240,000 written as a whole number mutiplied by a power of ten

The rumpart family is building a new room onto their house. the width of the new room will be 16 feet. the length of the room will be 4% greater than the width. write an expression to find the length of the new room. what will be the area of this new room?

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out

Jordan got 27 out of 90 correct on his test . what fraction of the marks did her get correct