When you ask "What number is halfway between 69 and 354?" 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=354.
To find the number halfway between 69 and 354, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 69 and 354 into our formula, we get:
(69 + 354)/2 = 211.5
Thus, the number halfway between 69 and 354 is 211.5.
To check that our answer is correct, we subtract 69 from 211.5 and subtract 211.5 from 354 and compare the two numbers:
211.5 - 69 = 142.5
354 - 211.5 = 142.5
As you can see, the halfway number is 142.5 higher than 69 and 142.5 lower than 354. Therefore, our halfway between answer of 211.5 above is correct.
Halfway Between
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Halfway Between 69 and 355
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