When you ask "What number is halfway between 15 and 898?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=15 and Y=898.
To find the number halfway between 15 and 898, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 15 and 898 into our formula, we get:
(15 + 898)/2 = 456.5
Thus, the number halfway between 15 and 898 is 456.5.
To check that our answer is correct, we subtract 15 from 456.5 and subtract 456.5 from 898 and compare the two numbers:
456.5 - 15 = 441.5
898 - 456.5 = 441.5
As you can see, the halfway number is 441.5 higher than 15 and 441.5 lower than 898. Therefore, our halfway between answer of 456.5 above is correct.
Halfway Between
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Halfway Between 15 and 899
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