When you ask "What number is halfway between 40 and 127?" 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=127.
To find the number halfway between 40 and 127, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 40 and 127 into our formula, we get:
(40 + 127)/2 = 83.5
Thus, the number halfway between 40 and 127 is 83.5.
To check that our answer is correct, we subtract 40 from 83.5 and subtract 83.5 from 127 and compare the two numbers:
83.5 - 40 = 43.5
127 - 83.5 = 43.5
As you can see, the halfway number is 43.5 higher than 40 and 43.5 lower than 127. Therefore, our halfway between answer of 83.5 above is correct.
Halfway Between
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Halfway Between 40 and 128
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