Halfway Between 18 and 1000

When you ask "What number is halfway between 18 and 1000?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=18 and Y=1000.

Halfway Between Line

To find the number halfway between 18 and 1000, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 18 and 1000 into our formula, we get:

(18 + 1000)/2 = 509

Thus, the number halfway between 18 and 1000 is 509.

To check that our answer is correct, we subtract 18 from 509 and subtract 509 from 1000 and compare the two numbers:

509 - 18 = 491
1000 - 509 = 491

As you can see, the halfway number is 491 higher than 18 and 491 lower than 1000. Therefore, our halfway between answer of 509 above is correct.

Halfway Between
Find halfway between two other numbers here!

Halfway Between 19 and 19
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