When you ask "What number is halfway between 4 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=4 and Y=408.
To find the number halfway between 4 and 408, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 4 and 408 into our formula, we get:
(4 + 408)/2 = 206
Thus, the number halfway between 4 and 408 is 206.
To check that our answer is correct, we subtract 4 from 206 and subtract 206 from 408 and compare the two numbers:
206 - 4 = 202
408 - 206 = 202
As you can see, the halfway number is 202 higher than 4 and 202 lower than 408. Therefore, our halfway between answer of 206 above is correct.
Halfway Between
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Halfway Between 4 and 409
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