When you ask "What number is halfway between 1 and 22?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=1 and Y=22.
To find the number halfway between 1 and 22, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 1 and 22 into our formula, we get:
(1 + 22)/2 = 11.5
Thus, the number halfway between 1 and 22 is 11.5.
To check that our answer is correct, we subtract 1 from 11.5 and subtract 11.5 from 22 and compare the two numbers:
11.5 - 1 = 10.5
22 - 11.5 = 10.5
As you can see, the halfway number is 10.5 higher than 1 and 10.5 lower than 22. Therefore, our halfway between answer of 11.5 above is correct.
Halfway Between
Find halfway between two other numbers here!
Halfway Between 1 and 23
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