When you ask "What number is halfway between 7 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=7 and Y=691.
To find the number halfway between 7 and 691, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 691 into our formula, we get:
(7 + 691)/2 = 349
Thus, the number halfway between 7 and 691 is 349.
To check that our answer is correct, we subtract 7 from 349 and subtract 349 from 691 and compare the two numbers:
349 - 7 = 342
691 - 349 = 342
As you can see, the halfway number is 342 higher than 7 and 342 lower than 691. Therefore, our halfway between answer of 349 above is correct.
Halfway Between
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Halfway Between 7 and 692
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