When you ask "What number is halfway between 8 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=8 and Y=628.
To find the number halfway between 8 and 628, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 8 and 628 into our formula, we get:
(8 + 628)/2 = 318
Thus, the number halfway between 8 and 628 is 318.
To check that our answer is correct, we subtract 8 from 318 and subtract 318 from 628 and compare the two numbers:
318 - 8 = 310
628 - 318 = 310
As you can see, the halfway number is 310 higher than 8 and 310 lower than 628. Therefore, our halfway between answer of 318 above is correct.
Halfway Between
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Halfway Between 8 and 629
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