When you ask "What number is halfway between 3 and 987?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=3 and Y=987.
To find the number halfway between 3 and 987, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 3 and 987 into our formula, we get:
(3 + 987)/2 = 495
Thus, the number halfway between 3 and 987 is 495.
To check that our answer is correct, we subtract 3 from 495 and subtract 495 from 987 and compare the two numbers:
495 - 3 = 492
987 - 495 = 492
As you can see, the halfway number is 492 higher than 3 and 492 lower than 987. Therefore, our halfway between answer of 495 above is correct.
Halfway Between
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Halfway Between 3 and 988
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