When you ask "What number is halfway between 84 and 342?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=84 and Y=342.
To find the number halfway between 84 and 342, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 84 and 342 into our formula, we get:
(84 + 342)/2 = 213
Thus, the number halfway between 84 and 342 is 213.
To check that our answer is correct, we subtract 84 from 213 and subtract 213 from 342 and compare the two numbers:
213 - 84 = 129
342 - 213 = 129
As you can see, the halfway number is 129 higher than 84 and 129 lower than 342. Therefore, our halfway between answer of 213 above is correct.
Halfway Between
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Halfway Between 84 and 343
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