When you ask "What number is halfway between 63 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=63 and Y=209.
To find the number halfway between 63 and 209, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 63 and 209 into our formula, we get:
(63 + 209)/2 = 136
Thus, the number halfway between 63 and 209 is 136.
To check that our answer is correct, we subtract 63 from 136 and subtract 136 from 209 and compare the two numbers:
136 - 63 = 73
209 - 136 = 73
As you can see, the halfway number is 73 higher than 63 and 73 lower than 209. Therefore, our halfway between answer of 136 above is correct.
Halfway Between
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Halfway Between 63 and 210
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