Halfway Between 78 and 122

When you ask "What number is halfway between 78 and 122?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=78 and Y=122.

Halfway Between Line

To find the number halfway between 78 and 122, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 78 and 122 into our formula, we get:

(78 + 122)/2 = 100

Thus, the number halfway between 78 and 122 is 100.

To check that our answer is correct, we subtract 78 from 100 and subtract 100 from 122 and compare the two numbers:

100 - 78 = 22
122 - 100 = 22

As you can see, the halfway number is 22 higher than 78 and 22 lower than 122. Therefore, our halfway between answer of 100 above is correct.

Halfway Between
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Halfway Between 78 and 123
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