When you ask "What number is halfway between 7 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=7 and Y=209.
To find the number halfway between 7 and 209, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 209 into our formula, we get:
(7 + 209)/2 = 108
Thus, the number halfway between 7 and 209 is 108.
To check that our answer is correct, we subtract 7 from 108 and subtract 108 from 209 and compare the two numbers:
108 - 7 = 101
209 - 108 = 101
As you can see, the halfway number is 101 higher than 7 and 101 lower than 209. Therefore, our halfway between answer of 108 above is correct.
Halfway Between
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Halfway Between 7 and 210
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