When you ask "What number is halfway between 80 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=80 and Y=145.
To find the number halfway between 80 and 145, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 80 and 145 into our formula, we get:
(80 + 145)/2 = 112.5
Thus, the number halfway between 80 and 145 is 112.5.
To check that our answer is correct, we subtract 80 from 112.5 and subtract 112.5 from 145 and compare the two numbers:
112.5 - 80 = 32.5
145 - 112.5 = 32.5
As you can see, the halfway number is 32.5 higher than 80 and 32.5 lower than 145. Therefore, our halfway between answer of 112.5 above is correct.
Halfway Between
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Halfway Between 80 and 146
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