Question

Hoover Dam, is 223 meters high. Errands Dam, is 240 meters high. Write and evaluate a numerical expression to find the difference between the heights of the two dams.

Answer 1

Explanation:

In order to find the difference between two numbers, you must subtract the two numbers.

Subtracting helps you see how much bigger or smaller a number is.

223 and 240 subtracted is 17.

Therefore, the difference in heights is 17 meters.

This written in a numerical expression would be:

240 - 223 = x

x = 17.