When you ask "What number is halfway between 7 and 843?" 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=843.
To find the number halfway between 7 and 843, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 843 into our formula, we get:
(7 + 843)/2 = 425
Thus, the number halfway between 7 and 843 is 425.
To check that our answer is correct, we subtract 7 from 425 and subtract 425 from 843 and compare the two numbers:
425 - 7 = 418
843 - 425 = 418
As you can see, the halfway number is 418 higher than 7 and 418 lower than 843. Therefore, our halfway between answer of 425 above is correct.
Halfway Between
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Halfway Between 7 and 844
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