Halfway Between 21 and 112

When you ask "What number is halfway between 21 and 112?" 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=112.

Halfway Between Line

To find the number halfway between 21 and 112, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 21 and 112 into our formula, we get:

(21 + 112)/2 = 66.5

Thus, the number halfway between 21 and 112 is 66.5.

To check that our answer is correct, we subtract 21 from 66.5 and subtract 66.5 from 112 and compare the two numbers:

66.5 - 21 = 45.5
112 - 66.5 = 45.5

As you can see, the halfway number is 45.5 higher than 21 and 45.5 lower than 112. Therefore, our halfway between answer of 66.5 above is correct.

Halfway Between
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Halfway Between 21 and 113
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