When you ask "What number is halfway between 8 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=8 and Y=420.
To find the number halfway between 8 and 420, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 8 and 420 into our formula, we get:
(8 + 420)/2 = 214
Thus, the number halfway between 8 and 420 is 214.
To check that our answer is correct, we subtract 8 from 214 and subtract 214 from 420 and compare the two numbers:
214 - 8 = 206
420 - 214 = 206
As you can see, the halfway number is 206 higher than 8 and 206 lower than 420. Therefore, our halfway between answer of 214 above is correct.
Halfway Between
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Halfway Between 8 and 421
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