Halfway Between 30 and 660

When you ask "What number is halfway between 30 and 660?" 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=660.

Halfway Between Line

To find the number halfway between 30 and 660, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 30 and 660 into our formula, we get:

(30 + 660)/2 = 345

Thus, the number halfway between 30 and 660 is 345.

To check that our answer is correct, we subtract 30 from 345 and subtract 345 from 660 and compare the two numbers:

345 - 30 = 315
660 - 345 = 315

As you can see, the halfway number is 315 higher than 30 and 315 lower than 660. Therefore, our halfway between answer of 345 above is correct.

Halfway Between
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