When you ask "What number is halfway between 3 and 430?" 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=430.
To find the number halfway between 3 and 430, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 3 and 430 into our formula, we get:
(3 + 430)/2 = 216.5
Thus, the number halfway between 3 and 430 is 216.5.
To check that our answer is correct, we subtract 3 from 216.5 and subtract 216.5 from 430 and compare the two numbers:
216.5 - 3 = 213.5
430 - 216.5 = 213.5
As you can see, the halfway number is 213.5 higher than 3 and 213.5 lower than 430. Therefore, our halfway between answer of 216.5 above is correct.
Halfway Between
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Halfway Between 3 and 431
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