When you ask "What number is halfway between 12 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=12 and Y=628.
To find the number halfway between 12 and 628, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 12 and 628 into our formula, we get:
(12 + 628)/2 = 320
Thus, the number halfway between 12 and 628 is 320.
To check that our answer is correct, we subtract 12 from 320 and subtract 320 from 628 and compare the two numbers:
320 - 12 = 308
628 - 320 = 308
As you can see, the halfway number is 308 higher than 12 and 308 lower than 628. Therefore, our halfway between answer of 320 above is correct.
Halfway Between
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Halfway Between 12 and 629
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