Halfway Between 21 and 54

When you ask "What number is halfway between 21 and 54?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=21 and Y=54.

Halfway Between Line

To find the number halfway between 21 and 54, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 21 and 54 into our formula, we get:

(21 + 54)/2 = 37.5

Thus, the number halfway between 21 and 54 is 37.5.

To check that our answer is correct, we subtract 21 from 37.5 and subtract 37.5 from 54 and compare the two numbers:

37.5 - 21 = 16.5
54 - 37.5 = 16.5

As you can see, the halfway number is 16.5 higher than 21 and 16.5 lower than 54. Therefore, our halfway between answer of 37.5 above is correct.

Halfway Between
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Halfway Between 21 and 55
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