When you ask "What number is halfway between 42 and 775?" 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=775.
To find the number halfway between 42 and 775, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 775 into our formula, we get:
(42 + 775)/2 = 408.5
Thus, the number halfway between 42 and 775 is 408.5.
To check that our answer is correct, we subtract 42 from 408.5 and subtract 408.5 from 775 and compare the two numbers:
408.5 - 42 = 366.5
775 - 408.5 = 366.5
As you can see, the halfway number is 366.5 higher than 42 and 366.5 lower than 775. Therefore, our halfway between answer of 408.5 above is correct.
Halfway Between
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Halfway Between 42 and 776
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