When you ask "What number is halfway between 98 and 615?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=98 and Y=615.
To find the number halfway between 98 and 615, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 98 and 615 into our formula, we get:
(98 + 615)/2 = 356.5
Thus, the number halfway between 98 and 615 is 356.5.
To check that our answer is correct, we subtract 98 from 356.5 and subtract 356.5 from 615 and compare the two numbers:
356.5 - 98 = 258.5
615 - 356.5 = 258.5
As you can see, the halfway number is 258.5 higher than 98 and 258.5 lower than 615. Therefore, our halfway between answer of 356.5 above is correct.
Halfway Between
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Halfway Between 98 and 616
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