When you ask "What number is halfway between 7 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=7 and Y=828.
To find the number halfway between 7 and 828, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 828 into our formula, we get:
(7 + 828)/2 = 417.5
Thus, the number halfway between 7 and 828 is 417.5.
To check that our answer is correct, we subtract 7 from 417.5 and subtract 417.5 from 828 and compare the two numbers:
417.5 - 7 = 410.5
828 - 417.5 = 410.5
As you can see, the halfway number is 410.5 higher than 7 and 410.5 lower than 828. Therefore, our halfway between answer of 417.5 above is correct.
Halfway Between
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Halfway Between 7 and 829
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