When you ask "What number is halfway between 69 and 153?" 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=153.
To find the number halfway between 69 and 153, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 69 and 153 into our formula, we get:
(69 + 153)/2 = 111
Thus, the number halfway between 69 and 153 is 111.
To check that our answer is correct, we subtract 69 from 111 and subtract 111 from 153 and compare the two numbers:
111 - 69 = 42
153 - 111 = 42
As you can see, the halfway number is 42 higher than 69 and 42 lower than 153. Therefore, our halfway between answer of 111 above is correct.
Halfway Between
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Halfway Between 69 and 154
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