When you ask "What number is halfway between 42 and 797?" 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=797.
To find the number halfway between 42 and 797, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 797 into our formula, we get:
(42 + 797)/2 = 419.5
Thus, the number halfway between 42 and 797 is 419.5.
To check that our answer is correct, we subtract 42 from 419.5 and subtract 419.5 from 797 and compare the two numbers:
419.5 - 42 = 377.5
797 - 419.5 = 377.5
As you can see, the halfway number is 377.5 higher than 42 and 377.5 lower than 797. Therefore, our halfway between answer of 419.5 above is correct.
Halfway Between
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Halfway Between 42 and 798
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