When you ask "What number is halfway between 42 and 145?" 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=145.
To find the number halfway between 42 and 145, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 145 into our formula, we get:
(42 + 145)/2 = 93.5
Thus, the number halfway between 42 and 145 is 93.5.
To check that our answer is correct, we subtract 42 from 93.5 and subtract 93.5 from 145 and compare the two numbers:
93.5 - 42 = 51.5
145 - 93.5 = 51.5
As you can see, the halfway number is 51.5 higher than 42 and 51.5 lower than 145. Therefore, our halfway between answer of 93.5 above is correct.
Halfway Between
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Halfway Between 42 and 146
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