When you ask "What number is halfway between 69 and 850?" 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=850.
To find the number halfway between 69 and 850, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 69 and 850 into our formula, we get:
(69 + 850)/2 = 459.5
Thus, the number halfway between 69 and 850 is 459.5.
To check that our answer is correct, we subtract 69 from 459.5 and subtract 459.5 from 850 and compare the two numbers:
459.5 - 69 = 390.5
850 - 459.5 = 390.5
As you can see, the halfway number is 390.5 higher than 69 and 390.5 lower than 850. Therefore, our halfway between answer of 459.5 above is correct.
Halfway Between
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