Halfway Between 51 and 78

When you ask "What number is halfway between 51 and 78?" 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=78.

Halfway Between Line

To find the number halfway between 51 and 78, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 51 and 78 into our formula, we get:

(51 + 78)/2 = 64.5

Thus, the number halfway between 51 and 78 is 64.5.

To check that our answer is correct, we subtract 51 from 64.5 and subtract 64.5 from 78 and compare the two numbers:

64.5 - 51 = 13.5
78 - 64.5 = 13.5

As you can see, the halfway number is 13.5 higher than 51 and 13.5 lower than 78. Therefore, our halfway between answer of 64.5 above is correct.

Halfway Between
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Halfway Between 51 and 79
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