
When you ask "What number is halfway between 45 and 299?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=45 and Y=299.

To find the number halfway between 45 and 299, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 45 and 299 into our formula, we get:
(45 + 299)/2 = 172
Thus, the number halfway between 45 and 299 is 172.
To check that our answer is correct, we subtract 45 from 172 and subtract 172 from 299 and compare the two numbers:
172 - 45 = 127
299 - 172 = 127
As you can see, the halfway number is 127 higher than 45 and 127 lower than 299. Therefore, our halfway between answer of 172 above is correct.
Halfway Between
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Halfway Between 45 and 300
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