Halfway Between 100 and 840

When you ask "What number is halfway between 100 and 840?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=100 and Y=840.

Halfway Between Line

To find the number halfway between 100 and 840, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 100 and 840 into our formula, we get:

(100 + 840)/2 = 470

Thus, the number halfway between 100 and 840 is 470.

To check that our answer is correct, we subtract 100 from 470 and subtract 470 from 840 and compare the two numbers:

470 - 100 = 370
840 - 470 = 370

As you can see, the halfway number is 370 higher than 100 and 370 lower than 840. Therefore, our halfway between answer of 470 above is correct.

Halfway Between
Find halfway between two other numbers here!

Halfway Between 100 and 841
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