When you ask "What number is halfway between 30 and 268?" 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=268.
To find the number halfway between 30 and 268, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 30 and 268 into our formula, we get:
(30 + 268)/2 = 149
Thus, the number halfway between 30 and 268 is 149.
To check that our answer is correct, we subtract 30 from 149 and subtract 149 from 268 and compare the two numbers:
149 - 30 = 119
268 - 149 = 119
As you can see, the halfway number is 119 higher than 30 and 119 lower than 268. Therefore, our halfway between answer of 149 above is correct.
Halfway Between
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Halfway Between 30 and 269
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