When you ask "What number is halfway between 9 and 282?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=9 and Y=282.
To find the number halfway between 9 and 282, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 9 and 282 into our formula, we get:
(9 + 282)/2 = 145.5
Thus, the number halfway between 9 and 282 is 145.5.
To check that our answer is correct, we subtract 9 from 145.5 and subtract 145.5 from 282 and compare the two numbers:
145.5 - 9 = 136.5
282 - 145.5 = 136.5
As you can see, the halfway number is 136.5 higher than 9 and 136.5 lower than 282. Therefore, our halfway between answer of 145.5 above is correct.
Halfway Between
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Halfway Between 9 and 283
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