When you ask "What number is halfway between 20 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=20 and Y=282.
To find the number halfway between 20 and 282, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 20 and 282 into our formula, we get:
(20 + 282)/2 = 151
Thus, the number halfway between 20 and 282 is 151.
To check that our answer is correct, we subtract 20 from 151 and subtract 151 from 282 and compare the two numbers:
151 - 20 = 131
282 - 151 = 131
As you can see, the halfway number is 131 higher than 20 and 131 lower than 282. Therefore, our halfway between answer of 151 above is correct.
Halfway Between
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Halfway Between 20 and 283
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