When you ask "What number is halfway between 42 and 248?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=42 and Y=248.
To find the number halfway between 42 and 248, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 248 into our formula, we get:
(42 + 248)/2 = 145
Thus, the number halfway between 42 and 248 is 145.
To check that our answer is correct, we subtract 42 from 145 and subtract 145 from 248 and compare the two numbers:
145 - 42 = 103
248 - 145 = 103
As you can see, the halfway number is 103 higher than 42 and 103 lower than 248. Therefore, our halfway between answer of 145 above is correct.
Halfway Between
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Halfway Between 42 and 249
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