When you ask "What number is halfway between 29 and 408?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=29 and Y=408.
To find the number halfway between 29 and 408, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 29 and 408 into our formula, we get:
(29 + 408)/2 = 218.5
Thus, the number halfway between 29 and 408 is 218.5.
To check that our answer is correct, we subtract 29 from 218.5 and subtract 218.5 from 408 and compare the two numbers:
218.5 - 29 = 189.5
408 - 218.5 = 189.5
As you can see, the halfway number is 189.5 higher than 29 and 189.5 lower than 408. Therefore, our halfway between answer of 218.5 above is correct.
Halfway Between
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Halfway Between 29 and 409
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