When you ask "What number is halfway between 49 and 668?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=49 and Y=668.
To find the number halfway between 49 and 668, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 49 and 668 into our formula, we get:
(49 + 668)/2 = 358.5
Thus, the number halfway between 49 and 668 is 358.5.
To check that our answer is correct, we subtract 49 from 358.5 and subtract 358.5 from 668 and compare the two numbers:
358.5 - 49 = 309.5
668 - 358.5 = 309.5
As you can see, the halfway number is 309.5 higher than 49 and 309.5 lower than 668. Therefore, our halfway between answer of 358.5 above is correct.
Halfway Between
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