When you ask "What number is halfway between 71 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=71 and Y=397.
To find the number halfway between 71 and 397, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 71 and 397 into our formula, we get:
(71 + 397)/2 = 234
Thus, the number halfway between 71 and 397 is 234.
To check that our answer is correct, we subtract 71 from 234 and subtract 234 from 397 and compare the two numbers:
234 - 71 = 163
397 - 234 = 163
As you can see, the halfway number is 163 higher than 71 and 163 lower than 397. Therefore, our halfway between answer of 234 above is correct.
Halfway Between
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Halfway Between 71 and 398
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