When you ask "What number is halfway between 39 and 240?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=39 and Y=240.
To find the number halfway between 39 and 240, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 39 and 240 into our formula, we get:
(39 + 240)/2 = 139.5
Thus, the number halfway between 39 and 240 is 139.5.
To check that our answer is correct, we subtract 39 from 139.5 and subtract 139.5 from 240 and compare the two numbers:
139.5 - 39 = 100.5
240 - 139.5 = 100.5
As you can see, the halfway number is 100.5 higher than 39 and 100.5 lower than 240. Therefore, our halfway between answer of 139.5 above is correct.
Halfway Between
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Halfway Between 39 and 241
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