When you ask "What number is halfway between 36 and 221?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=36 and Y=221.
To find the number halfway between 36 and 221, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 36 and 221 into our formula, we get:
(36 + 221)/2 = 128.5
Thus, the number halfway between 36 and 221 is 128.5.
To check that our answer is correct, we subtract 36 from 128.5 and subtract 128.5 from 221 and compare the two numbers:
128.5 - 36 = 92.5
221 - 128.5 = 92.5
As you can see, the halfway number is 92.5 higher than 36 and 92.5 lower than 221. Therefore, our halfway between answer of 128.5 above is correct.
Halfway Between
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Halfway Between 36 and 222
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