Subtracting Integers

Which addition expression would be equal to the subtraction expression

5 - 9?

Solve: 5 - 9

Which addition expression would be equal to the subtraction expression -7 - 5?

Solve: -7 - 5

Solve: -6 - (-32)

The floor of the shallow end of the swimming pool is at -3 feet. The floor of the deep end is 9 feet deeper. Which expression can be used to find the depth of the deep end?

The highest elevation in Mexico is 5700 meters, on Pico de Orizaba. The lowest elevation in Mexico is -10 meters, in Laguna Salada. What is the range in elevations in Mexico?