When you ask "What number is halfway between 9 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=9 and Y=228.
To find the number halfway between 9 and 228, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 9 and 228 into our formula, we get:
(9 + 228)/2 = 118.5
Thus, the number halfway between 9 and 228 is 118.5.
To check that our answer is correct, we subtract 9 from 118.5 and subtract 118.5 from 228 and compare the two numbers:
118.5 - 9 = 109.5
228 - 118.5 = 109.5
As you can see, the halfway number is 109.5 higher than 9 and 109.5 lower than 228. Therefore, our halfway between answer of 118.5 above is correct.
Halfway Between
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Halfway Between 9 and 229
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