When you ask "What number is halfway between 79 and 691?" 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=691.
To find the number halfway between 79 and 691, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 79 and 691 into our formula, we get:
(79 + 691)/2 = 385
Thus, the number halfway between 79 and 691 is 385.
To check that our answer is correct, we subtract 79 from 385 and subtract 385 from 691 and compare the two numbers:
385 - 79 = 306
691 - 385 = 306
As you can see, the halfway number is 306 higher than 79 and 306 lower than 691. Therefore, our halfway between answer of 385 above is correct.
Halfway Between
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Halfway Between 79 and 692
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