DAT destroyer 2011 GC Q172

[babowc]

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Could anyone explain how 1.2x10^-3 - 6.0x10^-4 equates to 6.0x10^-4?

I understand everything else...

Is it 12x10^-4 - 6.0x10^-4 equating to 6.0x10^-4?

 

[Paperclipz]

Yup that's exactly right. Think of it as 12x10^-4 being 0.0012 and you are subtracting 6x10^-4 or 0.0006.

So just subtract 0.0012-0.0006 and you still get 0.0006 or 6x10^-4.

 

[babowc]

Great!
Thank you.. Just needed verification on the math!