When you ask "What number is halfway between 69 and 872?" 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=872.
To find the number halfway between 69 and 872, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 69 and 872 into our formula, we get:
(69 + 872)/2 = 470.5
Thus, the number halfway between 69 and 872 is 470.5.
To check that our answer is correct, we subtract 69 from 470.5 and subtract 470.5 from 872 and compare the two numbers:
470.5 - 69 = 401.5
872 - 470.5 = 401.5
As you can see, the halfway number is 401.5 higher than 69 and 401.5 lower than 872. Therefore, our halfway between answer of 470.5 above is correct.
Halfway Between
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Halfway Between 69 and 873
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