When you ask "What number is halfway between 69 and 409?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=69 and Y=409.
To find the number halfway between 69 and 409, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 69 and 409 into our formula, we get:
(69 + 409)/2 = 239
Thus, the number halfway between 69 and 409 is 239.
To check that our answer is correct, we subtract 69 from 239 and subtract 239 from 409 and compare the two numbers:
239 - 69 = 170
409 - 239 = 170
As you can see, the halfway number is 170 higher than 69 and 170 lower than 409. Therefore, our halfway between answer of 239 above is correct.
Halfway Between
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Halfway Between 69 and 410
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