When you ask "What number is halfway between 28 and 270?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=28 and Y=270.
To find the number halfway between 28 and 270, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 28 and 270 into our formula, we get:
(28 + 270)/2 = 149
Thus, the number halfway between 28 and 270 is 149.
To check that our answer is correct, we subtract 28 from 149 and subtract 149 from 270 and compare the two numbers:
149 - 28 = 121
270 - 149 = 121
As you can see, the halfway number is 121 higher than 28 and 121 lower than 270. Therefore, our halfway between answer of 149 above is correct.
Halfway Between
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Halfway Between 28 and 271
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