When you ask "What number is halfway between 23 and 142?" 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=142.
To find the number halfway between 23 and 142, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 23 and 142 into our formula, we get:
(23 + 142)/2 = 82.5
Thus, the number halfway between 23 and 142 is 82.5.
To check that our answer is correct, we subtract 23 from 82.5 and subtract 82.5 from 142 and compare the two numbers:
82.5 - 23 = 59.5
142 - 82.5 = 59.5
As you can see, the halfway number is 59.5 higher than 23 and 59.5 lower than 142. Therefore, our halfway between answer of 82.5 above is correct.
Halfway Between
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Halfway Between 23 and 143
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