When you ask "What number is halfway between 74 and 83?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=74 and Y=83.
To find the number halfway between 74 and 83, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 74 and 83 into our formula, we get:
(74 + 83)/2 = 78.5
Thus, the number halfway between 74 and 83 is 78.5.
To check that our answer is correct, we subtract 74 from 78.5 and subtract 78.5 from 83 and compare the two numbers:
78.5 - 74 = 4.5
83 - 78.5 = 4.5
As you can see, the halfway number is 4.5 higher than 74 and 4.5 lower than 83. Therefore, our halfway between answer of 78.5 above is correct.
Halfway Between
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