When you ask "What number is halfway between 42 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=42 and Y=828.
To find the number halfway between 42 and 828, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 828 into our formula, we get:
(42 + 828)/2 = 435
Thus, the number halfway between 42 and 828 is 435.
To check that our answer is correct, we subtract 42 from 435 and subtract 435 from 828 and compare the two numbers:
435 - 42 = 393
828 - 435 = 393
As you can see, the halfway number is 393 higher than 42 and 393 lower than 828. Therefore, our halfway between answer of 435 above is correct.
Halfway Between
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Halfway Between 42 and 829
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