When you ask "What number is halfway between 42 and 276?" 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=276.
To find the number halfway between 42 and 276, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 276 into our formula, we get:
(42 + 276)/2 = 159
Thus, the number halfway between 42 and 276 is 159.
To check that our answer is correct, we subtract 42 from 159 and subtract 159 from 276 and compare the two numbers:
159 - 42 = 117
276 - 159 = 117
As you can see, the halfway number is 117 higher than 42 and 117 lower than 276. Therefore, our halfway between answer of 159 above is correct.
Halfway Between
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Halfway Between 42 and 277
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