When you ask "What number is halfway between 4 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=4 and Y=178.
To find the number halfway between 4 and 178, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 4 and 178 into our formula, we get:
(4 + 178)/2 = 91
Thus, the number halfway between 4 and 178 is 91.
To check that our answer is correct, we subtract 4 from 91 and subtract 91 from 178 and compare the two numbers:
91 - 4 = 87
178 - 91 = 87
As you can see, the halfway number is 87 higher than 4 and 87 lower than 178. Therefore, our halfway between answer of 91 above is correct.
Halfway Between
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Halfway Between 4 and 179
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