When you ask "What number is halfway between 17 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=17 and Y=228.
To find the number halfway between 17 and 228, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 17 and 228 into our formula, we get:
(17 + 228)/2 = 122.5
Thus, the number halfway between 17 and 228 is 122.5.
To check that our answer is correct, we subtract 17 from 122.5 and subtract 122.5 from 228 and compare the two numbers:
122.5 - 17 = 105.5
228 - 122.5 = 105.5
As you can see, the halfway number is 105.5 higher than 17 and 105.5 lower than 228. Therefore, our halfway between answer of 122.5 above is correct.
Halfway Between
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Halfway Between 17 and 229
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