When you ask "What number is halfway between 7 and 824?" 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=824.
To find the number halfway between 7 and 824, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 824 into our formula, we get:
(7 + 824)/2 = 415.5
Thus, the number halfway between 7 and 824 is 415.5.
To check that our answer is correct, we subtract 7 from 415.5 and subtract 415.5 from 824 and compare the two numbers:
415.5 - 7 = 408.5
824 - 415.5 = 408.5
As you can see, the halfway number is 408.5 higher than 7 and 408.5 lower than 824. Therefore, our halfway between answer of 415.5 above is correct.
Halfway Between
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Halfway Between 7 and 825
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