When you ask "What number is halfway between 73 and 178?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=73 and Y=178.
To find the number halfway between 73 and 178, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 73 and 178 into our formula, we get:
(73 + 178)/2 = 125.5
Thus, the number halfway between 73 and 178 is 125.5.
To check that our answer is correct, we subtract 73 from 125.5 and subtract 125.5 from 178 and compare the two numbers:
125.5 - 73 = 52.5
178 - 125.5 = 52.5
As you can see, the halfway number is 52.5 higher than 73 and 52.5 lower than 178. Therefore, our halfway between answer of 125.5 above is correct.
Halfway Between
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Halfway Between 73 and 179
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