When you ask "What number is halfway between 17 and 245?" 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=245.
To find the number halfway between 17 and 245, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 17 and 245 into our formula, we get:
(17 + 245)/2 = 131
Thus, the number halfway between 17 and 245 is 131.
To check that our answer is correct, we subtract 17 from 131 and subtract 131 from 245 and compare the two numbers:
131 - 17 = 114
245 - 131 = 114
As you can see, the halfway number is 114 higher than 17 and 114 lower than 245. Therefore, our halfway between answer of 131 above is correct.
Halfway Between
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Halfway Between 17 and 246
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