When you ask "What number is halfway between 69 and 220?" 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=220.
To find the number halfway between 69 and 220, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 69 and 220 into our formula, we get:
(69 + 220)/2 = 144.5
Thus, the number halfway between 69 and 220 is 144.5.
To check that our answer is correct, we subtract 69 from 144.5 and subtract 144.5 from 220 and compare the two numbers:
144.5 - 69 = 75.5
220 - 144.5 = 75.5
As you can see, the halfway number is 75.5 higher than 69 and 75.5 lower than 220. Therefore, our halfway between answer of 144.5 above is correct.
Halfway Between
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Halfway Between 69 and 221
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