Question

Hoover Dam, in the United States, is 233 meters high. Ertan Dam, in China, is 240 meters high. Write and evaluate a numerical expression to find the difference between the heights of the two dams.

Answer 1

240-233 is the expression

the answer is the Ertan Dam is 7 meters higher than the Hoover Dam.

Answer 2

Answer: Numerical expression for the difference in their heights

`h=240-233`

The difference in their heights= 7 meters

Explanation:

Given: The height of the Hoover Dam, in the United States = 233 meters

The height of Ertan Dam, in China = 240 meters

let h be the difference in their heights

The difference between the heights of the two dams is given by the numerical expression

`h=240-233\\\Rightarrow\ h=7\ meters`

Therefore, the difference the heights of the two dams is 7 meters.