When you ask "What number is halfway between 15 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=15 and Y=299.
To find the number halfway between 15 and 299, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 15 and 299 into our formula, we get:
(15 + 299)/2 = 157
Thus, the number halfway between 15 and 299 is 157.
To check that our answer is correct, we subtract 15 from 157 and subtract 157 from 299 and compare the two numbers:
157 - 15 = 142
299 - 157 = 142
As you can see, the halfway number is 142 higher than 15 and 142 lower than 299. Therefore, our halfway between answer of 157 above is correct.
Halfway Between
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Halfway Between 15 and 300
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