When you ask "What number is halfway between 20 and 473?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=20 and Y=473.
To find the number halfway between 20 and 473, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 20 and 473 into our formula, we get:
(20 + 473)/2 = 246.5
Thus, the number halfway between 20 and 473 is 246.5.
To check that our answer is correct, we subtract 20 from 246.5 and subtract 246.5 from 473 and compare the two numbers:
246.5 - 20 = 226.5
473 - 246.5 = 226.5
As you can see, the halfway number is 226.5 higher than 20 and 226.5 lower than 473. Therefore, our halfway between answer of 246.5 above is correct.
Halfway Between
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Halfway Between 20 and 474
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