When you ask "What number is halfway between 71 and 542?" 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=542.
To find the number halfway between 71 and 542, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 71 and 542 into our formula, we get:
(71 + 542)/2 = 306.5
Thus, the number halfway between 71 and 542 is 306.5.
To check that our answer is correct, we subtract 71 from 306.5 and subtract 306.5 from 542 and compare the two numbers:
306.5 - 71 = 235.5
542 - 306.5 = 235.5
As you can see, the halfway number is 235.5 higher than 71 and 235.5 lower than 542. Therefore, our halfway between answer of 306.5 above is correct.
Halfway Between
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Halfway Between 71 and 543
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