When you ask "What number is halfway between 21 and 32?" 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=32.
To find the number halfway between 21 and 32, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 21 and 32 into our formula, we get:
(21 + 32)/2 = 26.5
Thus, the number halfway between 21 and 32 is 26.5.
To check that our answer is correct, we subtract 21 from 26.5 and subtract 26.5 from 32 and compare the two numbers:
26.5 - 21 = 5.5
32 - 26.5 = 5.5
As you can see, the halfway number is 5.5 higher than 21 and 5.5 lower than 32. Therefore, our halfway between answer of 26.5 above is correct.
Halfway Between
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Halfway Between 21 and 33
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