When you ask "What number is halfway between 7 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=7 and Y=689.
To find the number halfway between 7 and 689, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 689 into our formula, we get:
(7 + 689)/2 = 348
Thus, the number halfway between 7 and 689 is 348.
To check that our answer is correct, we subtract 7 from 348 and subtract 348 from 689 and compare the two numbers:
348 - 7 = 341
689 - 348 = 341
As you can see, the halfway number is 341 higher than 7 and 341 lower than 689. Therefore, our halfway between answer of 348 above is correct.
Halfway Between
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Halfway Between 7 and 690
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