When you ask "What number is halfway between 17 and 560?" 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=560.
To find the number halfway between 17 and 560, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 17 and 560 into our formula, we get:
(17 + 560)/2 = 288.5
Thus, the number halfway between 17 and 560 is 288.5.
To check that our answer is correct, we subtract 17 from 288.5 and subtract 288.5 from 560 and compare the two numbers:
288.5 - 17 = 271.5
560 - 288.5 = 271.5
As you can see, the halfway number is 271.5 higher than 17 and 271.5 lower than 560. Therefore, our halfway between answer of 288.5 above is correct.
Halfway Between
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Halfway Between 17 and 561
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