When you ask "What number is halfway between 84 and 545?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=84 and Y=545.
To find the number halfway between 84 and 545, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 84 and 545 into our formula, we get:
(84 + 545)/2 = 314.5
Thus, the number halfway between 84 and 545 is 314.5.
To check that our answer is correct, we subtract 84 from 314.5 and subtract 314.5 from 545 and compare the two numbers:
314.5 - 84 = 230.5
545 - 314.5 = 230.5
As you can see, the halfway number is 230.5 higher than 84 and 230.5 lower than 545. Therefore, our halfway between answer of 314.5 above is correct.
Halfway Between
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Halfway Between 84 and 546
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