When you ask "What number is halfway between 29 and 420?" 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=420.
To find the number halfway between 29 and 420, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 29 and 420 into our formula, we get:
(29 + 420)/2 = 224.5
Thus, the number halfway between 29 and 420 is 224.5.
To check that our answer is correct, we subtract 29 from 224.5 and subtract 224.5 from 420 and compare the two numbers:
224.5 - 29 = 195.5
420 - 224.5 = 195.5
As you can see, the halfway number is 195.5 higher than 29 and 195.5 lower than 420. Therefore, our halfway between answer of 224.5 above is correct.
Halfway Between
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Halfway Between 29 and 421
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