When you ask "What number is halfway between 69 and 550?" 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=550.
To find the number halfway between 69 and 550, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 69 and 550 into our formula, we get:
(69 + 550)/2 = 309.5
Thus, the number halfway between 69 and 550 is 309.5.
To check that our answer is correct, we subtract 69 from 309.5 and subtract 309.5 from 550 and compare the two numbers:
309.5 - 69 = 240.5
550 - 309.5 = 240.5
As you can see, the halfway number is 240.5 higher than 69 and 240.5 lower than 550. Therefore, our halfway between answer of 309.5 above is correct.
Halfway Between
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Halfway Between 69 and 551
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