Halfway Between 51 and 109

When you ask "What number is halfway between 51 and 109?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=51 and Y=109.

Halfway Between Line

To find the number halfway between 51 and 109, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 51 and 109 into our formula, we get:

(51 + 109)/2 = 80

Thus, the number halfway between 51 and 109 is 80.

To check that our answer is correct, we subtract 51 from 80 and subtract 80 from 109 and compare the two numbers:

80 - 51 = 29
109 - 80 = 29

As you can see, the halfway number is 29 higher than 51 and 29 lower than 109. Therefore, our halfway between answer of 80 above is correct.

Halfway Between
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Halfway Between 51 and 110
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