When you ask "What number is halfway between 87 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=87 and Y=238.
To find the number halfway between 87 and 238, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 87 and 238 into our formula, we get:
(87 + 238)/2 = 162.5
Thus, the number halfway between 87 and 238 is 162.5.
To check that our answer is correct, we subtract 87 from 162.5 and subtract 162.5 from 238 and compare the two numbers:
162.5 - 87 = 75.5
238 - 162.5 = 75.5
As you can see, the halfway number is 75.5 higher than 87 and 75.5 lower than 238. Therefore, our halfway between answer of 162.5 above is correct.
Halfway Between
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Halfway Between 87 and 239
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