When you ask "What number is halfway between 12 and 274?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=12 and Y=274.
To find the number halfway between 12 and 274, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 12 and 274 into our formula, we get:
(12 + 274)/2 = 143
Thus, the number halfway between 12 and 274 is 143.
To check that our answer is correct, we subtract 12 from 143 and subtract 143 from 274 and compare the two numbers:
143 - 12 = 131
274 - 143 = 131
As you can see, the halfway number is 131 higher than 12 and 131 lower than 274. Therefore, our halfway between answer of 143 above is correct.
Halfway Between
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Halfway Between 12 and 275
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