When you ask "What number is halfway between 73 and 389?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=73 and Y=389.
To find the number halfway between 73 and 389, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 73 and 389 into our formula, we get:
(73 + 389)/2 = 231
Thus, the number halfway between 73 and 389 is 231.
To check that our answer is correct, we subtract 73 from 231 and subtract 231 from 389 and compare the two numbers:
231 - 73 = 158
389 - 231 = 158
As you can see, the halfway number is 158 higher than 73 and 158 lower than 389. Therefore, our halfway between answer of 231 above is correct.
Halfway Between
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Halfway Between 73 and 390
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