When you ask "What number is halfway between 17 and 269?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=17 and Y=269.
To find the number halfway between 17 and 269, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 17 and 269 into our formula, we get:
(17 + 269)/2 = 143
Thus, the number halfway between 17 and 269 is 143.
To check that our answer is correct, we subtract 17 from 143 and subtract 143 from 269 and compare the two numbers:
143 - 17 = 126
269 - 143 = 126
As you can see, the halfway number is 126 higher than 17 and 126 lower than 269. Therefore, our halfway between answer of 143 above is correct.
Halfway Between
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Halfway Between 17 and 270
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