When you ask "What number is halfway between 88 and 397?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=88 and Y=397.
To find the number halfway between 88 and 397, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 88 and 397 into our formula, we get:
(88 + 397)/2 = 242.5
Thus, the number halfway between 88 and 397 is 242.5.
To check that our answer is correct, we subtract 88 from 242.5 and subtract 242.5 from 397 and compare the two numbers:
242.5 - 88 = 154.5
397 - 242.5 = 154.5
As you can see, the halfway number is 154.5 higher than 88 and 154.5 lower than 397. Therefore, our halfway between answer of 242.5 above is correct.
Halfway Between
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Halfway Between 88 and 398
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