When you ask "What number is halfway between 69 and 280?" 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=280.
To find the number halfway between 69 and 280, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 69 and 280 into our formula, we get:
(69 + 280)/2 = 174.5
Thus, the number halfway between 69 and 280 is 174.5.
To check that our answer is correct, we subtract 69 from 174.5 and subtract 174.5 from 280 and compare the two numbers:
174.5 - 69 = 105.5
280 - 174.5 = 105.5
As you can see, the halfway number is 105.5 higher than 69 and 105.5 lower than 280. Therefore, our halfway between answer of 174.5 above is correct.
Halfway Between
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Halfway Between 69 and 281
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