When you ask "What number is halfway between 89 and 228?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=89 and Y=228.
To find the number halfway between 89 and 228, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 89 and 228 into our formula, we get:
(89 + 228)/2 = 158.5
Thus, the number halfway between 89 and 228 is 158.5.
To check that our answer is correct, we subtract 89 from 158.5 and subtract 158.5 from 228 and compare the two numbers:
158.5 - 89 = 69.5
228 - 158.5 = 69.5
As you can see, the halfway number is 69.5 higher than 89 and 69.5 lower than 228. Therefore, our halfway between answer of 158.5 above is correct.
Halfway Between
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Halfway Between 89 and 229
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