When you ask "What number is halfway between 69 and 630?" 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=630.
To find the number halfway between 69 and 630, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 69 and 630 into our formula, we get:
(69 + 630)/2 = 349.5
Thus, the number halfway between 69 and 630 is 349.5.
To check that our answer is correct, we subtract 69 from 349.5 and subtract 349.5 from 630 and compare the two numbers:
349.5 - 69 = 280.5
630 - 349.5 = 280.5
As you can see, the halfway number is 280.5 higher than 69 and 280.5 lower than 630. Therefore, our halfway between answer of 349.5 above is correct.
Halfway Between
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Halfway Between 69 and 631
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