When you ask "What number is halfway between 42 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=42 and Y=270.
To find the number halfway between 42 and 270, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 270 into our formula, we get:
(42 + 270)/2 = 156
Thus, the number halfway between 42 and 270 is 156.
To check that our answer is correct, we subtract 42 from 156 and subtract 156 from 270 and compare the two numbers:
156 - 42 = 114
270 - 156 = 114
As you can see, the halfway number is 114 higher than 42 and 114 lower than 270. Therefore, our halfway between answer of 156 above is correct.
Halfway Between
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Halfway Between 42 and 271
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