When you ask "What number is halfway between 21 and 349?" 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=349.
To find the number halfway between 21 and 349, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 21 and 349 into our formula, we get:
(21 + 349)/2 = 185
Thus, the number halfway between 21 and 349 is 185.
To check that our answer is correct, we subtract 21 from 185 and subtract 185 from 349 and compare the two numbers:
185 - 21 = 164
349 - 185 = 164
As you can see, the halfway number is 164 higher than 21 and 164 lower than 349. Therefore, our halfway between answer of 185 above is correct.
Halfway Between
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Halfway Between 21 and 350
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