When you ask "What number is halfway between 10 and 449?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=10 and Y=449.
To find the number halfway between 10 and 449, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 10 and 449 into our formula, we get:
(10 + 449)/2 = 229.5
Thus, the number halfway between 10 and 449 is 229.5.
To check that our answer is correct, we subtract 10 from 229.5 and subtract 229.5 from 449 and compare the two numbers:
229.5 - 10 = 219.5
449 - 229.5 = 219.5
As you can see, the halfway number is 219.5 higher than 10 and 219.5 lower than 449. Therefore, our halfway between answer of 229.5 above is correct.
Halfway Between
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Halfway Between 10 and 450
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