When you ask "What number is halfway between 73 and 778?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=73 and Y=778.
To find the number halfway between 73 and 778, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 73 and 778 into our formula, we get:
(73 + 778)/2 = 425.5
Thus, the number halfway between 73 and 778 is 425.5.
To check that our answer is correct, we subtract 73 from 425.5 and subtract 425.5 from 778 and compare the two numbers:
425.5 - 73 = 352.5
778 - 425.5 = 352.5
As you can see, the halfway number is 352.5 higher than 73 and 352.5 lower than 778. Therefore, our halfway between answer of 425.5 above is correct.
Halfway Between
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Halfway Between 73 and 779
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