When you ask "What number is halfway between 10 and 331?" 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=331.
To find the number halfway between 10 and 331, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 10 and 331 into our formula, we get:
(10 + 331)/2 = 170.5
Thus, the number halfway between 10 and 331 is 170.5.
To check that our answer is correct, we subtract 10 from 170.5 and subtract 170.5 from 331 and compare the two numbers:
170.5 - 10 = 160.5
331 - 170.5 = 160.5
As you can see, the halfway number is 160.5 higher than 10 and 160.5 lower than 331. Therefore, our halfway between answer of 170.5 above is correct.
Halfway Between
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Halfway Between 10 and 332
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