When you ask "What number is halfway between 42 and 242?" 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=242.
To find the number halfway between 42 and 242, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 242 into our formula, we get:
(42 + 242)/2 = 142
Thus, the number halfway between 42 and 242 is 142.
To check that our answer is correct, we subtract 42 from 142 and subtract 142 from 242 and compare the two numbers:
142 - 42 = 100
242 - 142 = 100
As you can see, the halfway number is 100 higher than 42 and 100 lower than 242. Therefore, our halfway between answer of 142 above is correct.
Halfway Between
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Halfway Between 42 and 243
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