When you ask "What number is halfway between 87 and 894?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=87 and Y=894.
To find the number halfway between 87 and 894, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 87 and 894 into our formula, we get:
(87 + 894)/2 = 490.5
Thus, the number halfway between 87 and 894 is 490.5.
To check that our answer is correct, we subtract 87 from 490.5 and subtract 490.5 from 894 and compare the two numbers:
490.5 - 87 = 403.5
894 - 490.5 = 403.5
As you can see, the halfway number is 403.5 higher than 87 and 403.5 lower than 894. Therefore, our halfway between answer of 490.5 above is correct.
Halfway Between
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Halfway Between 87 and 895
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