When you ask "What number is halfway between 30 and 693?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=30 and Y=693.
To find the number halfway between 30 and 693, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 30 and 693 into our formula, we get:
(30 + 693)/2 = 361.5
Thus, the number halfway between 30 and 693 is 361.5.
To check that our answer is correct, we subtract 30 from 361.5 and subtract 361.5 from 693 and compare the two numbers:
361.5 - 30 = 331.5
693 - 361.5 = 331.5
As you can see, the halfway number is 331.5 higher than 30 and 331.5 lower than 693. Therefore, our halfway between answer of 361.5 above is correct.
Halfway Between
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Halfway Between 30 and 694
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