When you ask "What number is halfway between 76 and 689?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=76 and Y=689.
To find the number halfway between 76 and 689, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 76 and 689 into our formula, we get:
(76 + 689)/2 = 382.5
Thus, the number halfway between 76 and 689 is 382.5.
To check that our answer is correct, we subtract 76 from 382.5 and subtract 382.5 from 689 and compare the two numbers:
382.5 - 76 = 306.5
689 - 382.5 = 306.5
As you can see, the halfway number is 306.5 higher than 76 and 306.5 lower than 689. Therefore, our halfway between answer of 382.5 above is correct.
Halfway Between
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Halfway Between 76 and 690
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