When you ask "What number is halfway between 79 and 870?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=79 and Y=870.
To find the number halfway between 79 and 870, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 79 and 870 into our formula, we get:
(79 + 870)/2 = 474.5
Thus, the number halfway between 79 and 870 is 474.5.
To check that our answer is correct, we subtract 79 from 474.5 and subtract 474.5 from 870 and compare the two numbers:
474.5 - 79 = 395.5
870 - 474.5 = 395.5
As you can see, the halfway number is 395.5 higher than 79 and 395.5 lower than 870. Therefore, our halfway between answer of 474.5 above is correct.
Halfway Between
Find halfway between two other numbers here!
Halfway Between 79 and 871
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