Starting at the fourth floor, an elevator goes down 3 floors and then up 8 floors. Write a numerical expression to show at which floor does the elevator stop?
4 - 3 + 8 = ?
4-3=1
1+8=9
4-3+8=9
Answer is=9
To determine at which floor the elevator stops, we can start at the initial floor and subtract the number of floors it goes down and then add the number of floors it goes up.
Starting at the fourth floor, the elevator goes down 3 floors: 4 - 3.
Then, it goes up 8 floors: (4 - 3) + 8.
Simplifying the expression, we get: 1 + 8.
Therefore, the elevator stops at the 9th floor.