When you ask "What number is halfway between 23 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=23 and Y=145.
To find the number halfway between 23 and 145, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 23 and 145 into our formula, we get:
(23 + 145)/2 = 84
Thus, the number halfway between 23 and 145 is 84.
To check that our answer is correct, we subtract 23 from 84 and subtract 84 from 145 and compare the two numbers:
84 - 23 = 61
145 - 84 = 61
As you can see, the halfway number is 61 higher than 23 and 61 lower than 145. Therefore, our halfway between answer of 84 above is correct.
Halfway Between
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Halfway Between 23 and 146
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