When you ask "What number is halfway between 5 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=5 and Y=221.
To find the number halfway between 5 and 221, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 5 and 221 into our formula, we get:
(5 + 221)/2 = 113
Thus, the number halfway between 5 and 221 is 113.
To check that our answer is correct, we subtract 5 from 113 and subtract 113 from 221 and compare the two numbers:
113 - 5 = 108
221 - 113 = 108
As you can see, the halfway number is 108 higher than 5 and 108 lower than 221. Therefore, our halfway between answer of 113 above is correct.
Halfway Between
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Halfway Between 5 and 222
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