When you ask "What number is halfway between 69 and 187?" 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=187.
To find the number halfway between 69 and 187, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 69 and 187 into our formula, we get:
(69 + 187)/2 = 128
Thus, the number halfway between 69 and 187 is 128.
To check that our answer is correct, we subtract 69 from 128 and subtract 128 from 187 and compare the two numbers:
128 - 69 = 59
187 - 128 = 59
As you can see, the halfway number is 59 higher than 69 and 59 lower than 187. Therefore, our halfway between answer of 128 above is correct.
Halfway Between
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Halfway Between 69 and 188
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