When you ask "What number is halfway between 20 and 955?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=20 and Y=955.
To find the number halfway between 20 and 955, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 20 and 955 into our formula, we get:
(20 + 955)/2 = 487.5
Thus, the number halfway between 20 and 955 is 487.5.
To check that our answer is correct, we subtract 20 from 487.5 and subtract 487.5 from 955 and compare the two numbers:
487.5 - 20 = 467.5
955 - 487.5 = 467.5
As you can see, the halfway number is 467.5 higher than 20 and 467.5 lower than 955. Therefore, our halfway between answer of 487.5 above is correct.
Halfway Between
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Halfway Between 20 and 956
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