When you ask "What number is halfway between 69 and 989?" 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=989.
To find the number halfway between 69 and 989, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 69 and 989 into our formula, we get:
(69 + 989)/2 = 529
Thus, the number halfway between 69 and 989 is 529.
To check that our answer is correct, we subtract 69 from 529 and subtract 529 from 989 and compare the two numbers:
529 - 69 = 460
989 - 529 = 460
As you can see, the halfway number is 460 higher than 69 and 460 lower than 989. Therefore, our halfway between answer of 529 above is correct.
Halfway Between
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Halfway Between 69 and 990
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