
When you ask "What number is halfway between 22 and 135?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=22 and Y=135.

To find the number halfway between 22 and 135, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 22 and 135 into our formula, we get:
(22 + 135)/2 = 78.5
Thus, the number halfway between 22 and 135 is 78.5.
To check that our answer is correct, we subtract 22 from 78.5 and subtract 78.5 from 135 and compare the two numbers:
78.5 - 22 = 56.5
135 - 78.5 = 56.5
As you can see, the halfway number is 56.5 higher than 22 and 56.5 lower than 135. Therefore, our halfway between answer of 78.5 above is correct.
Halfway Between
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Halfway Between 22 and 136
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