When you ask "What number is halfway between 40 and 189?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=40 and Y=189.
To find the number halfway between 40 and 189, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 40 and 189 into our formula, we get:
(40 + 189)/2 = 114.5
Thus, the number halfway between 40 and 189 is 114.5.
To check that our answer is correct, we subtract 40 from 114.5 and subtract 114.5 from 189 and compare the two numbers:
114.5 - 40 = 74.5
189 - 114.5 = 74.5
As you can see, the halfway number is 74.5 higher than 40 and 74.5 lower than 189. Therefore, our halfway between answer of 114.5 above is correct.
Halfway Between
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Halfway Between 40 and 190
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