
When you ask "What number is halfway between 70 and 873?" 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=873.

To find the number halfway between 70 and 873, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 70 and 873 into our formula, we get:
(70 + 873)/2 = 471.5
Thus, the number halfway between 70 and 873 is 471.5.
To check that our answer is correct, we subtract 70 from 471.5 and subtract 471.5 from 873 and compare the two numbers:
471.5 - 70 = 401.5
873 - 471.5 = 401.5
As you can see, the halfway number is 401.5 higher than 70 and 401.5 lower than 873. Therefore, our halfway between answer of 471.5 above is correct.
Halfway Between
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Halfway Between 70 and 874
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