Cindy is riding on an elevator in a building that has many
floors and one basement floor underground. Answer these
questions regarding Cindy's adventure riding the elevator up and
down the building.

1) From the first floor, Cindy goes up 8 floors and then down
3 floors. What floor is she now on?
2) Cindy is on the 18th floor. She goes down 10 floors and then
up 13 floors. What floor is she now on?
3) Cindy is on the 7th floor. She then goes up to the 19th floor.
How many floors did she go up?
4) Cindy is on the 2nd floor. She goes down 3 floors. What floor
is she now on?
5) From the top floor, Cindy goes down to the 8th floor,
travelling 17 floors. What is the top floor?
6) Cindy does not know what floor she is on. She presses the
button to go to the 10th floor and the elevator travels 4
floors. What floor was she on originally?