When you ask "What number is halfway between 28 and 177?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=28 and Y=177.
To find the number halfway between 28 and 177, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 28 and 177 into our formula, we get:
(28 + 177)/2 = 102.5
Thus, the number halfway between 28 and 177 is 102.5.
To check that our answer is correct, we subtract 28 from 102.5 and subtract 102.5 from 177 and compare the two numbers:
102.5 - 28 = 74.5
177 - 102.5 = 74.5
As you can see, the halfway number is 74.5 higher than 28 and 74.5 lower than 177. Therefore, our halfway between answer of 102.5 above is correct.
Halfway Between
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Halfway Between 28 and 178
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