When you ask "What number is halfway between 69 and 144?" 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=144.
To find the number halfway between 69 and 144, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 69 and 144 into our formula, we get:
(69 + 144)/2 = 106.5
Thus, the number halfway between 69 and 144 is 106.5.
To check that our answer is correct, we subtract 69 from 106.5 and subtract 106.5 from 144 and compare the two numbers:
106.5 - 69 = 37.5
144 - 106.5 = 37.5
As you can see, the halfway number is 37.5 higher than 69 and 37.5 lower than 144. Therefore, our halfway between answer of 106.5 above is correct.
Halfway Between
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Halfway Between 69 and 145
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