When you ask "What number is halfway between 42 and 495?" 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=495.
To find the number halfway between 42 and 495, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 495 into our formula, we get:
(42 + 495)/2 = 268.5
Thus, the number halfway between 42 and 495 is 268.5.
To check that our answer is correct, we subtract 42 from 268.5 and subtract 268.5 from 495 and compare the two numbers:
268.5 - 42 = 226.5
495 - 268.5 = 226.5
As you can see, the halfway number is 226.5 higher than 42 and 226.5 lower than 495. Therefore, our halfway between answer of 268.5 above is correct.
Halfway Between
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Halfway Between 42 and 496
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