When you ask "What number is halfway between 15 and 283?" 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=283.
To find the number halfway between 15 and 283, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 15 and 283 into our formula, we get:
(15 + 283)/2 = 149
Thus, the number halfway between 15 and 283 is 149.
To check that our answer is correct, we subtract 15 from 149 and subtract 149 from 283 and compare the two numbers:
149 - 15 = 134
283 - 149 = 134
As you can see, the halfway number is 134 higher than 15 and 134 lower than 283. Therefore, our halfway between answer of 149 above is correct.
Halfway Between
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Halfway Between 15 and 284
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