When you ask "What number is halfway between 7 and 54?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=7 and Y=54.
To find the number halfway between 7 and 54, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 54 into our formula, we get:
(7 + 54)/2 = 30.5
Thus, the number halfway between 7 and 54 is 30.5.
To check that our answer is correct, we subtract 7 from 30.5 and subtract 30.5 from 54 and compare the two numbers:
30.5 - 7 = 23.5
54 - 30.5 = 23.5
As you can see, the halfway number is 23.5 higher than 7 and 23.5 lower than 54. Therefore, our halfway between answer of 30.5 above is correct.
Halfway Between
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Halfway Between 7 and 55
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