When you ask "What number is halfway between 29 and 102?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=29 and Y=102.
To find the number halfway between 29 and 102, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 29 and 102 into our formula, we get:
(29 + 102)/2 = 65.5
Thus, the number halfway between 29 and 102 is 65.5.
To check that our answer is correct, we subtract 29 from 65.5 and subtract 65.5 from 102 and compare the two numbers:
65.5 - 29 = 36.5
102 - 65.5 = 36.5
As you can see, the halfway number is 36.5 higher than 29 and 36.5 lower than 102. Therefore, our halfway between answer of 65.5 above is correct.
Halfway Between
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Halfway Between 29 and 103
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