When you ask "What number is halfway between 18 and 475?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=18 and Y=475.
To find the number halfway between 18 and 475, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 18 and 475 into our formula, we get:
(18 + 475)/2 = 246.5
Thus, the number halfway between 18 and 475 is 246.5.
To check that our answer is correct, we subtract 18 from 246.5 and subtract 246.5 from 475 and compare the two numbers:
246.5 - 18 = 228.5
475 - 246.5 = 228.5
As you can see, the halfway number is 228.5 higher than 18 and 228.5 lower than 475. Therefore, our halfway between answer of 246.5 above is correct.
Halfway Between
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Halfway Between 18 and 476
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