When you ask "What number is halfway between 35 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=35 and Y=221.
To find the number halfway between 35 and 221, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 35 and 221 into our formula, we get:
(35 + 221)/2 = 128
Thus, the number halfway between 35 and 221 is 128.
To check that our answer is correct, we subtract 35 from 128 and subtract 128 from 221 and compare the two numbers:
128 - 35 = 93
221 - 128 = 93
As you can see, the halfway number is 93 higher than 35 and 93 lower than 221. Therefore, our halfway between answer of 128 above is correct.
Halfway Between
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Halfway Between 35 and 222
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