When you ask "What number is halfway between 42 and 431?" 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=431.
To find the number halfway between 42 and 431, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 431 into our formula, we get:
(42 + 431)/2 = 236.5
Thus, the number halfway between 42 and 431 is 236.5.
To check that our answer is correct, we subtract 42 from 236.5 and subtract 236.5 from 431 and compare the two numbers:
236.5 - 42 = 194.5
431 - 236.5 = 194.5
As you can see, the halfway number is 194.5 higher than 42 and 194.5 lower than 431. Therefore, our halfway between answer of 236.5 above is correct.
Halfway Between
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Halfway Between 42 and 432
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