When you ask "What number is halfway between 49 and 664?" 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=664.
To find the number halfway between 49 and 664, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 49 and 664 into our formula, we get:
(49 + 664)/2 = 356.5
Thus, the number halfway between 49 and 664 is 356.5.
To check that our answer is correct, we subtract 49 from 356.5 and subtract 356.5 from 664 and compare the two numbers:
356.5 - 49 = 307.5
664 - 356.5 = 307.5
As you can see, the halfway number is 307.5 higher than 49 and 307.5 lower than 664. Therefore, our halfway between answer of 356.5 above is correct.
Halfway Between
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Halfway Between 49 and 665
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