really? Never rode in an elevator? Can't add and subtract?
f = 10 - 9 + 29 - 3 - 12
An elevator on the 10th floor goes down 9 floors. Then it goes up 29 floors, down 3, and finally down 12. What floor does it end up on? Write an equation to show how you found your answer
2 answers
f = 15
The elevator ends up on the 15th floor.
This equation shows that we start at the 10th floor, then go down 9 floors (10 - 9), then go up 29 floors (- 9 + 29), then go down 3 floors (- 9 + 29 - 3), and finally go down 12 floors (- 9 + 29 - 3 - 12). The resulting number, 15, represents the floor the elevator ends up on.
The elevator ends up on the 15th floor.
This equation shows that we start at the 10th floor, then go down 9 floors (10 - 9), then go up 29 floors (- 9 + 29), then go down 3 floors (- 9 + 29 - 3), and finally go down 12 floors (- 9 + 29 - 3 - 12). The resulting number, 15, represents the floor the elevator ends up on.