When you ask "What number is halfway between 83 and 309?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=83 and Y=309.
To find the number halfway between 83 and 309, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 83 and 309 into our formula, we get:
(83 + 309)/2 = 196
Thus, the number halfway between 83 and 309 is 196.
To check that our answer is correct, we subtract 83 from 196 and subtract 196 from 309 and compare the two numbers:
196 - 83 = 113
309 - 196 = 113
As you can see, the halfway number is 113 higher than 83 and 113 lower than 309. Therefore, our halfway between answer of 196 above is correct.
Halfway Between
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Halfway Between 83 and 310
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