When you ask "What number is halfway between 42 and 310?" 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=310.
To find the number halfway between 42 and 310, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 310 into our formula, we get:
(42 + 310)/2 = 176
Thus, the number halfway between 42 and 310 is 176.
To check that our answer is correct, we subtract 42 from 176 and subtract 176 from 310 and compare the two numbers:
176 - 42 = 134
310 - 176 = 134
As you can see, the halfway number is 134 higher than 42 and 134 lower than 310. Therefore, our halfway between answer of 176 above is correct.
Halfway Between
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Halfway Between 42 and 311
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