When you ask "What number is halfway between 63 and 428?" 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=428.
To find the number halfway between 63 and 428, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 63 and 428 into our formula, we get:
(63 + 428)/2 = 245.5
Thus, the number halfway between 63 and 428 is 245.5.
To check that our answer is correct, we subtract 63 from 245.5 and subtract 245.5 from 428 and compare the two numbers:
245.5 - 63 = 182.5
428 - 245.5 = 182.5
As you can see, the halfway number is 182.5 higher than 63 and 182.5 lower than 428. Therefore, our halfway between answer of 245.5 above is correct.
Halfway Between
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Halfway Between 63 and 429
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