When you ask "What number is halfway between 79 and 677?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=79 and Y=677.
To find the number halfway between 79 and 677, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 79 and 677 into our formula, we get:
(79 + 677)/2 = 378
Thus, the number halfway between 79 and 677 is 378.
To check that our answer is correct, we subtract 79 from 378 and subtract 378 from 677 and compare the two numbers:
378 - 79 = 299
677 - 378 = 299
As you can see, the halfway number is 299 higher than 79 and 299 lower than 677. Therefore, our halfway between answer of 378 above is correct.
Halfway Between
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Halfway Between 79 and 678
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