When you ask "What number is halfway between 74 and 143?" 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=143.
To find the number halfway between 74 and 143, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 74 and 143 into our formula, we get:
(74 + 143)/2 = 108.5
Thus, the number halfway between 74 and 143 is 108.5.
To check that our answer is correct, we subtract 74 from 108.5 and subtract 108.5 from 143 and compare the two numbers:
108.5 - 74 = 34.5
143 - 108.5 = 34.5
As you can see, the halfway number is 34.5 higher than 74 and 34.5 lower than 143. Therefore, our halfway between answer of 108.5 above is correct.
Halfway Between
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Halfway Between 74 and 144
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