When you ask "What number is halfway between 9 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=9 and Y=103.
To find the number halfway between 9 and 103, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 9 and 103 into our formula, we get:
(9 + 103)/2 = 56
Thus, the number halfway between 9 and 103 is 56.
To check that our answer is correct, we subtract 9 from 56 and subtract 56 from 103 and compare the two numbers:
56 - 9 = 47
103 - 56 = 47
As you can see, the halfway number is 47 higher than 9 and 47 lower than 103. Therefore, our halfway between answer of 56 above is correct.
Halfway Between
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Halfway Between 9 and 104
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