When you ask "What number is halfway between 57 and 238?" 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=238.
To find the number halfway between 57 and 238, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 57 and 238 into our formula, we get:
(57 + 238)/2 = 147.5
Thus, the number halfway between 57 and 238 is 147.5.
To check that our answer is correct, we subtract 57 from 147.5 and subtract 147.5 from 238 and compare the two numbers:
147.5 - 57 = 90.5
238 - 147.5 = 90.5
As you can see, the halfway number is 90.5 higher than 57 and 90.5 lower than 238. Therefore, our halfway between answer of 147.5 above is correct.
Halfway Between
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Halfway Between 57 and 239
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