When you ask "What number is halfway between 69 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=69 and Y=628.
To find the number halfway between 69 and 628, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 69 and 628 into our formula, we get:
(69 + 628)/2 = 348.5
Thus, the number halfway between 69 and 628 is 348.5.
To check that our answer is correct, we subtract 69 from 348.5 and subtract 348.5 from 628 and compare the two numbers:
348.5 - 69 = 279.5
628 - 348.5 = 279.5
As you can see, the halfway number is 279.5 higher than 69 and 279.5 lower than 628. Therefore, our halfway between answer of 348.5 above is correct.
Halfway Between
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Halfway Between 69 and 629
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