When you ask "What number is halfway between 22 and 689?" 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=689.
To find the number halfway between 22 and 689, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 22 and 689 into our formula, we get:
(22 + 689)/2 = 355.5
Thus, the number halfway between 22 and 689 is 355.5.
To check that our answer is correct, we subtract 22 from 355.5 and subtract 355.5 from 689 and compare the two numbers:
355.5 - 22 = 333.5
689 - 355.5 = 333.5
As you can see, the halfway number is 333.5 higher than 22 and 333.5 lower than 689. Therefore, our halfway between answer of 355.5 above is correct.
Halfway Between
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Halfway Between 22 and 690
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