When you ask "What number is halfway between 7 and 285?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=7 and Y=285.
To find the number halfway between 7 and 285, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 285 into our formula, we get:
(7 + 285)/2 = 146
Thus, the number halfway between 7 and 285 is 146.
To check that our answer is correct, we subtract 7 from 146 and subtract 146 from 285 and compare the two numbers:
146 - 7 = 139
285 - 146 = 139
As you can see, the halfway number is 139 higher than 7 and 139 lower than 285. Therefore, our halfway between answer of 146 above is correct.
Halfway Between
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Halfway Between 7 and 286
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