When you ask "What number is halfway between 1 and 209?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=1 and Y=209.
To find the number halfway between 1 and 209, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 1 and 209 into our formula, we get:
(1 + 209)/2 = 105
Thus, the number halfway between 1 and 209 is 105.
To check that our answer is correct, we subtract 1 from 105 and subtract 105 from 209 and compare the two numbers:
105 - 1 = 104
209 - 105 = 104
As you can see, the halfway number is 104 higher than 1 and 104 lower than 209. Therefore, our halfway between answer of 105 above is correct.
Halfway Between
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Halfway Between 1 and 210
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