When you ask "What number is halfway between 42 and 745?" 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=745.
To find the number halfway between 42 and 745, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 745 into our formula, we get:
(42 + 745)/2 = 393.5
Thus, the number halfway between 42 and 745 is 393.5.
To check that our answer is correct, we subtract 42 from 393.5 and subtract 393.5 from 745 and compare the two numbers:
393.5 - 42 = 351.5
745 - 393.5 = 351.5
As you can see, the halfway number is 351.5 higher than 42 and 351.5 lower than 745. Therefore, our halfway between answer of 393.5 above is correct.
Halfway Between
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Halfway Between 42 and 746
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