When you ask "What number is halfway between 49 and 684?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=49 and Y=684.
To find the number halfway between 49 and 684, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 49 and 684 into our formula, we get:
(49 + 684)/2 = 366.5
Thus, the number halfway between 49 and 684 is 366.5.
To check that our answer is correct, we subtract 49 from 366.5 and subtract 366.5 from 684 and compare the two numbers:
366.5 - 49 = 317.5
684 - 366.5 = 317.5
As you can see, the halfway number is 317.5 higher than 49 and 317.5 lower than 684. Therefore, our halfway between answer of 366.5 above is correct.
Halfway Between
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Halfway Between 49 and 685
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