When you ask "What number is halfway between 42 and 103?" 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=103.
To find the number halfway between 42 and 103, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 103 into our formula, we get:
(42 + 103)/2 = 72.5
Thus, the number halfway between 42 and 103 is 72.5.
To check that our answer is correct, we subtract 42 from 72.5 and subtract 72.5 from 103 and compare the two numbers:
72.5 - 42 = 30.5
103 - 72.5 = 30.5
As you can see, the halfway number is 30.5 higher than 42 and 30.5 lower than 103. Therefore, our halfway between answer of 72.5 above is correct.
Halfway Between
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Halfway Between 42 and 104
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