When you ask "What number is halfway between 4 and 169?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=4 and Y=169.
To find the number halfway between 4 and 169, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 4 and 169 into our formula, we get:
(4 + 169)/2 = 86.5
Thus, the number halfway between 4 and 169 is 86.5.
To check that our answer is correct, we subtract 4 from 86.5 and subtract 86.5 from 169 and compare the two numbers:
86.5 - 4 = 82.5
169 - 86.5 = 82.5
As you can see, the halfway number is 82.5 higher than 4 and 82.5 lower than 169. Therefore, our halfway between answer of 86.5 above is correct.
Halfway Between
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Halfway Between 4 and 170
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