When you ask "What number is halfway between 71 and 85?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=71 and Y=85.
To find the number halfway between 71 and 85, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 71 and 85 into our formula, we get:
(71 + 85)/2 = 78
Thus, the number halfway between 71 and 85 is 78.
To check that our answer is correct, we subtract 71 from 78 and subtract 78 from 85 and compare the two numbers:
78 - 71 = 7
85 - 78 = 7
As you can see, the halfway number is 7 higher than 71 and 7 lower than 85. Therefore, our halfway between answer of 78 above is correct.
Halfway Between
Find halfway between two other numbers here!
Halfway Between 71 and 86
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