When you ask "What number is halfway between 63 and 128?" 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=128.
To find the number halfway between 63 and 128, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 63 and 128 into our formula, we get:
(63 + 128)/2 = 95.5
Thus, the number halfway between 63 and 128 is 95.5.
To check that our answer is correct, we subtract 63 from 95.5 and subtract 95.5 from 128 and compare the two numbers:
95.5 - 63 = 32.5
128 - 95.5 = 32.5
As you can see, the halfway number is 32.5 higher than 63 and 32.5 lower than 128. Therefore, our halfway between answer of 95.5 above is correct.
Halfway Between
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Halfway Between 63 and 129
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