When you ask "What number is halfway between 10 and 431?" 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=431.
To find the number halfway between 10 and 431, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 10 and 431 into our formula, we get:
(10 + 431)/2 = 220.5
Thus, the number halfway between 10 and 431 is 220.5.
To check that our answer is correct, we subtract 10 from 220.5 and subtract 220.5 from 431 and compare the two numbers:
220.5 - 10 = 210.5
431 - 220.5 = 210.5
As you can see, the halfway number is 210.5 higher than 10 and 210.5 lower than 431. Therefore, our halfway between answer of 220.5 above is correct.
Halfway Between
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Halfway Between 10 and 432
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