When you ask "What number is halfway between 17 and 307?" 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=307.
To find the number halfway between 17 and 307, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 17 and 307 into our formula, we get:
(17 + 307)/2 = 162
Thus, the number halfway between 17 and 307 is 162.
To check that our answer is correct, we subtract 17 from 162 and subtract 162 from 307 and compare the two numbers:
162 - 17 = 145
307 - 162 = 145
As you can see, the halfway number is 145 higher than 17 and 145 lower than 307. Therefore, our halfway between answer of 162 above is correct.
Halfway Between
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Halfway Between 17 and 308
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