When you ask "What number is halfway between 56 and 90?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=56 and Y=90.
To find the number halfway between 56 and 90, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 56 and 90 into our formula, we get:
(56 + 90)/2 = 73
Thus, the number halfway between 56 and 90 is 73.
To check that our answer is correct, we subtract 56 from 73 and subtract 73 from 90 and compare the two numbers:
73 - 56 = 17
90 - 73 = 17
As you can see, the halfway number is 17 higher than 56 and 17 lower than 90. Therefore, our halfway between answer of 73 above is correct.
Halfway Between
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Halfway Between 56 and 91
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