When you ask "What number is halfway between 63 and 220?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=63 and Y=220.
To find the number halfway between 63 and 220, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 63 and 220 into our formula, we get:
(63 + 220)/2 = 141.5
Thus, the number halfway between 63 and 220 is 141.5.
To check that our answer is correct, we subtract 63 from 141.5 and subtract 141.5 from 220 and compare the two numbers:
141.5 - 63 = 78.5
220 - 141.5 = 78.5
As you can see, the halfway number is 78.5 higher than 63 and 78.5 lower than 220. Therefore, our halfway between answer of 141.5 above is correct.
Halfway Between
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Halfway Between 63 and 221
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