Halfway Between 21 and 671

When you ask "What number is halfway between 21 and 671?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=21 and Y=671.

Halfway Between Line

To find the number halfway between 21 and 671, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 21 and 671 into our formula, we get:

(21 + 671)/2 = 346

Thus, the number halfway between 21 and 671 is 346.

To check that our answer is correct, we subtract 21 from 346 and subtract 346 from 671 and compare the two numbers:

346 - 21 = 325
671 - 346 = 325

As you can see, the halfway number is 325 higher than 21 and 325 lower than 671. Therefore, our halfway between answer of 346 above is correct.

Halfway Between
Find halfway between two other numbers here!

Halfway Between 21 and 672
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