When you ask "What number is halfway between 98 and 155?" 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=155.
To find the number halfway between 98 and 155, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 98 and 155 into our formula, we get:
(98 + 155)/2 = 126.5
Thus, the number halfway between 98 and 155 is 126.5.
To check that our answer is correct, we subtract 98 from 126.5 and subtract 126.5 from 155 and compare the two numbers:
126.5 - 98 = 28.5
155 - 126.5 = 28.5
As you can see, the halfway number is 28.5 higher than 98 and 28.5 lower than 155. Therefore, our halfway between answer of 126.5 above is correct.
Halfway Between
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Halfway Between 98 and 156
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