When you ask "What number is halfway between 79 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=79 and Y=177.
To find the number halfway between 79 and 177, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 79 and 177 into our formula, we get:
(79 + 177)/2 = 128
Thus, the number halfway between 79 and 177 is 128.
To check that our answer is correct, we subtract 79 from 128 and subtract 128 from 177 and compare the two numbers:
128 - 79 = 49
177 - 128 = 49
As you can see, the halfway number is 49 higher than 79 and 49 lower than 177. Therefore, our halfway between answer of 128 above is correct.
Halfway Between
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Halfway Between 79 and 178
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