Halfway Between 40 and 645

When you ask "What number is halfway between 40 and 645?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=40 and Y=645.

Halfway Between Line

To find the number halfway between 40 and 645, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 40 and 645 into our formula, we get:

(40 + 645)/2 = 342.5

Thus, the number halfway between 40 and 645 is 342.5.

To check that our answer is correct, we subtract 40 from 342.5 and subtract 342.5 from 645 and compare the two numbers:

342.5 - 40 = 302.5
645 - 342.5 = 302.5

As you can see, the halfway number is 302.5 higher than 40 and 302.5 lower than 645. Therefore, our halfway between answer of 342.5 above is correct.

Halfway Between
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Halfway Between 40 and 646
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