When you ask "What number is halfway between 16 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=16 and Y=309.
To find the number halfway between 16 and 309, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 16 and 309 into our formula, we get:
(16 + 309)/2 = 162.5
Thus, the number halfway between 16 and 309 is 162.5.
To check that our answer is correct, we subtract 16 from 162.5 and subtract 162.5 from 309 and compare the two numbers:
162.5 - 16 = 146.5
309 - 162.5 = 146.5
As you can see, the halfway number is 146.5 higher than 16 and 146.5 lower than 309. Therefore, our halfway between answer of 162.5 above is correct.
Halfway Between
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Halfway Between 16 and 310
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