When you ask "What number is halfway between 42 and 225?" 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=225.
To find the number halfway between 42 and 225, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 225 into our formula, we get:
(42 + 225)/2 = 133.5
Thus, the number halfway between 42 and 225 is 133.5.
To check that our answer is correct, we subtract 42 from 133.5 and subtract 133.5 from 225 and compare the two numbers:
133.5 - 42 = 91.5
225 - 133.5 = 91.5
As you can see, the halfway number is 91.5 higher than 42 and 91.5 lower than 225. Therefore, our halfway between answer of 133.5 above is correct.
Halfway Between
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Halfway Between 42 and 226
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