When you ask "What number is halfway between 70 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=70 and Y=285.
To find the number halfway between 70 and 285, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 70 and 285 into our formula, we get:
(70 + 285)/2 = 177.5
Thus, the number halfway between 70 and 285 is 177.5.
To check that our answer is correct, we subtract 70 from 177.5 and subtract 177.5 from 285 and compare the two numbers:
177.5 - 70 = 107.5
285 - 177.5 = 107.5
As you can see, the halfway number is 107.5 higher than 70 and 107.5 lower than 285. Therefore, our halfway between answer of 177.5 above is correct.
Halfway Between
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Halfway Between 70 and 286
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