When you ask "What number is halfway between 17 and 249?" 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=249.
To find the number halfway between 17 and 249, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 17 and 249 into our formula, we get:
(17 + 249)/2 = 133
Thus, the number halfway between 17 and 249 is 133.
To check that our answer is correct, we subtract 17 from 133 and subtract 133 from 249 and compare the two numbers:
133 - 17 = 116
249 - 133 = 116
As you can see, the halfway number is 116 higher than 17 and 116 lower than 249. Therefore, our halfway between answer of 133 above is correct.
Halfway Between
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Halfway Between 17 and 250
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