When you ask "What number is halfway between 98 and 145?" 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=145.
To find the number halfway between 98 and 145, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 98 and 145 into our formula, we get:
(98 + 145)/2 = 121.5
Thus, the number halfway between 98 and 145 is 121.5.
To check that our answer is correct, we subtract 98 from 121.5 and subtract 121.5 from 145 and compare the two numbers:
121.5 - 98 = 23.5
145 - 121.5 = 23.5
As you can see, the halfway number is 23.5 higher than 98 and 23.5 lower than 145. Therefore, our halfway between answer of 121.5 above is correct.
Halfway Between
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Halfway Between 98 and 146
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