When you ask "What number is halfway between 57 and 214?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=57 and Y=214.
To find the number halfway between 57 and 214, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 57 and 214 into our formula, we get:
(57 + 214)/2 = 135.5
Thus, the number halfway between 57 and 214 is 135.5.
To check that our answer is correct, we subtract 57 from 135.5 and subtract 135.5 from 214 and compare the two numbers:
135.5 - 57 = 78.5
214 - 135.5 = 78.5
As you can see, the halfway number is 78.5 higher than 57 and 78.5 lower than 214. Therefore, our halfway between answer of 135.5 above is correct.
Halfway Between
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Halfway Between 57 and 215
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