When you ask "What number is halfway between 63 and 628?" 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=628.
To find the number halfway between 63 and 628, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 63 and 628 into our formula, we get:
(63 + 628)/2 = 345.5
Thus, the number halfway between 63 and 628 is 345.5.
To check that our answer is correct, we subtract 63 from 345.5 and subtract 345.5 from 628 and compare the two numbers:
345.5 - 63 = 282.5
628 - 345.5 = 282.5
As you can see, the halfway number is 282.5 higher than 63 and 282.5 lower than 628. Therefore, our halfway between answer of 345.5 above is correct.
Halfway Between
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Halfway Between 63 and 629
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