When you ask "What number is halfway between 40 and 247?" 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=247.
To find the number halfway between 40 and 247, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 40 and 247 into our formula, we get:
(40 + 247)/2 = 143.5
Thus, the number halfway between 40 and 247 is 143.5.
To check that our answer is correct, we subtract 40 from 143.5 and subtract 143.5 from 247 and compare the two numbers:
143.5 - 40 = 103.5
247 - 143.5 = 103.5
As you can see, the halfway number is 103.5 higher than 40 and 103.5 lower than 247. Therefore, our halfway between answer of 143.5 above is correct.
Halfway Between
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Halfway Between 40 and 248
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