When you ask "What number is halfway between 49 and 687?" 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=687.
To find the number halfway between 49 and 687, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 49 and 687 into our formula, we get:
(49 + 687)/2 = 368
Thus, the number halfway between 49 and 687 is 368.
To check that our answer is correct, we subtract 49 from 368 and subtract 368 from 687 and compare the two numbers:
368 - 49 = 319
687 - 368 = 319
As you can see, the halfway number is 319 higher than 49 and 319 lower than 687. Therefore, our halfway between answer of 368 above is correct.
Halfway Between
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Halfway Between 49 and 688
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