When you ask "What number is halfway between 42 and 757?" 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=757.
To find the number halfway between 42 and 757, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 757 into our formula, we get:
(42 + 757)/2 = 399.5
Thus, the number halfway between 42 and 757 is 399.5.
To check that our answer is correct, we subtract 42 from 399.5 and subtract 399.5 from 757 and compare the two numbers:
399.5 - 42 = 357.5
757 - 399.5 = 357.5
As you can see, the halfway number is 357.5 higher than 42 and 357.5 lower than 757. Therefore, our halfway between answer of 399.5 above is correct.
Halfway Between
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Halfway Between 42 and 758
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