When you ask "What number is halfway between 71 and 181?" 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=181.
To find the number halfway between 71 and 181, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 71 and 181 into our formula, we get:
(71 + 181)/2 = 126
Thus, the number halfway between 71 and 181 is 126.
To check that our answer is correct, we subtract 71 from 126 and subtract 126 from 181 and compare the two numbers:
126 - 71 = 55
181 - 126 = 55
As you can see, the halfway number is 55 higher than 71 and 55 lower than 181. Therefore, our halfway between answer of 126 above is correct.
Halfway Between
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Halfway Between 71 and 182
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