When you ask "What number is halfway between 98 and 779?" 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=779.
To find the number halfway between 98 and 779, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 98 and 779 into our formula, we get:
(98 + 779)/2 = 438.5
Thus, the number halfway between 98 and 779 is 438.5.
To check that our answer is correct, we subtract 98 from 438.5 and subtract 438.5 from 779 and compare the two numbers:
438.5 - 98 = 340.5
779 - 438.5 = 340.5
As you can see, the halfway number is 340.5 higher than 98 and 340.5 lower than 779. Therefore, our halfway between answer of 438.5 above is correct.
Halfway Between
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Halfway Between 98 and 780
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