When you ask "What number is halfway between 42 and 542?" 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=542.
To find the number halfway between 42 and 542, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 542 into our formula, we get:
(42 + 542)/2 = 292
Thus, the number halfway between 42 and 542 is 292.
To check that our answer is correct, we subtract 42 from 292 and subtract 292 from 542 and compare the two numbers:
292 - 42 = 250
542 - 292 = 250
As you can see, the halfway number is 250 higher than 42 and 250 lower than 542. Therefore, our halfway between answer of 292 above is correct.
Halfway Between
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Halfway Between 42 and 543
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