When you ask "What number is halfway between 76 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=76 and Y=221.
To find the number halfway between 76 and 221, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 76 and 221 into our formula, we get:
(76 + 221)/2 = 148.5
Thus, the number halfway between 76 and 221 is 148.5.
To check that our answer is correct, we subtract 76 from 148.5 and subtract 148.5 from 221 and compare the two numbers:
148.5 - 76 = 72.5
221 - 148.5 = 72.5
As you can see, the halfway number is 72.5 higher than 76 and 72.5 lower than 221. Therefore, our halfway between answer of 148.5 above is correct.
Halfway Between
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Halfway Between 76 and 222
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