When you ask "What number is halfway between 18 and 164?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=18 and Y=164.
To find the number halfway between 18 and 164, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 18 and 164 into our formula, we get:
(18 + 164)/2 = 91
Thus, the number halfway between 18 and 164 is 91.
To check that our answer is correct, we subtract 18 from 91 and subtract 91 from 164 and compare the two numbers:
91 - 18 = 73
164 - 91 = 73
As you can see, the halfway number is 73 higher than 18 and 73 lower than 164. Therefore, our halfway between answer of 91 above is correct.
Halfway Between
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Halfway Between 18 and 165
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