When you ask "What number is halfway between 86 and 407?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=86 and Y=407.
To find the number halfway between 86 and 407, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 86 and 407 into our formula, we get:
(86 + 407)/2 = 246.5
Thus, the number halfway between 86 and 407 is 246.5.
To check that our answer is correct, we subtract 86 from 246.5 and subtract 246.5 from 407 and compare the two numbers:
246.5 - 86 = 160.5
407 - 246.5 = 160.5
As you can see, the halfway number is 160.5 higher than 86 and 160.5 lower than 407. Therefore, our halfway between answer of 246.5 above is correct.
Halfway Between
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Halfway Between 86 and 408
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