Rounding

[laczlacylaci]

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So I have been rounding for most of the math.
The original numbers are
8.5=-623-(-394+x)
I rounded it to
8.5=-620-(-400+x), which gave me -228.5, near choice C than A.

On the actual exam, are the numbers this close? I suck at math 🙁

 

[majikarp]

as long as you can do the mental math you're probably in good shape. Numbers probably won't be this close on the real thing.