When you ask "What number is halfway between 82 and 172?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=82 and Y=172.
To find the number halfway between 82 and 172, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 82 and 172 into our formula, we get:
(82 + 172)/2 = 127
Thus, the number halfway between 82 and 172 is 127.
To check that our answer is correct, we subtract 82 from 127 and subtract 127 from 172 and compare the two numbers:
127 - 82 = 45
172 - 127 = 45
As you can see, the halfway number is 45 higher than 82 and 45 lower than 172. Therefore, our halfway between answer of 127 above is correct.
Halfway Between
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Halfway Between 82 and 173
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