When you ask "What number is halfway between 69 and 136?" 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=136.
To find the number halfway between 69 and 136, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 69 and 136 into our formula, we get:
(69 + 136)/2 = 102.5
Thus, the number halfway between 69 and 136 is 102.5.
To check that our answer is correct, we subtract 69 from 102.5 and subtract 102.5 from 136 and compare the two numbers:
102.5 - 69 = 33.5
136 - 102.5 = 33.5
As you can see, the halfway number is 33.5 higher than 69 and 33.5 lower than 136. Therefore, our halfway between answer of 102.5 above is correct.
Halfway Between
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Halfway Between 69 and 137
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