When you ask "What number is halfway between 64 and 387?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=64 and Y=387.
To find the number halfway between 64 and 387, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 64 and 387 into our formula, we get:
(64 + 387)/2 = 225.5
Thus, the number halfway between 64 and 387 is 225.5.
To check that our answer is correct, we subtract 64 from 225.5 and subtract 225.5 from 387 and compare the two numbers:
225.5 - 64 = 161.5
387 - 225.5 = 161.5
As you can see, the halfway number is 161.5 higher than 64 and 161.5 lower than 387. Therefore, our halfway between answer of 225.5 above is correct.
Halfway Between
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Halfway Between 64 and 388
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