When you ask "What number is halfway between 100 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=100 and Y=349.
To find the number halfway between 100 and 349, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 100 and 349 into our formula, we get:
(100 + 349)/2 = 224.5
Thus, the number halfway between 100 and 349 is 224.5.
To check that our answer is correct, we subtract 100 from 224.5 and subtract 224.5 from 349 and compare the two numbers:
224.5 - 100 = 124.5
349 - 224.5 = 124.5
As you can see, the halfway number is 124.5 higher than 100 and 124.5 lower than 349. Therefore, our halfway between answer of 224.5 above is correct.
Halfway Between
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Halfway Between 100 and 350
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