When you ask "What number is halfway between 70 and 827?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=70 and Y=827.
To find the number halfway between 70 and 827, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 70 and 827 into our formula, we get:
(70 + 827)/2 = 448.5
Thus, the number halfway between 70 and 827 is 448.5.
To check that our answer is correct, we subtract 70 from 448.5 and subtract 448.5 from 827 and compare the two numbers:
448.5 - 70 = 378.5
827 - 448.5 = 378.5
As you can see, the halfway number is 378.5 higher than 70 and 378.5 lower than 827. Therefore, our halfway between answer of 448.5 above is correct.
Halfway Between
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Halfway Between 70 and 828
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