When you ask "What number is halfway between 29 and 828?" 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=828.
To find the number halfway between 29 and 828, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 29 and 828 into our formula, we get:
(29 + 828)/2 = 428.5
Thus, the number halfway between 29 and 828 is 428.5.
To check that our answer is correct, we subtract 29 from 428.5 and subtract 428.5 from 828 and compare the two numbers:
428.5 - 29 = 399.5
828 - 428.5 = 399.5
As you can see, the halfway number is 399.5 higher than 29 and 399.5 lower than 828. Therefore, our halfway between answer of 428.5 above is correct.
Halfway Between
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Halfway Between 29 and 829
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