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Member advised to use the homework template for posts in the homework sections of PF.

So I know that you can't round off numbers in a longer calculation. (in physics)

but how is this with adding and subtracting. For example

52,32*13=680,16 -> 680,16/123=5,529....=5,5(because of the 13)

but what is correct when adding inbetween

530,014+0,01=530,02 -> 530,02*2=1060,04=1,1*1^3 (because of the *2)

or

530,014+0,01=530,02

It doesn't make any difference until now but it does in a longer calculation which is correct??

but how is this with adding and subtracting. For example

52,32*13=680,16 -> 680,16/123=5,529....=5,5(because of the 13)

but what is correct when adding inbetween

530,014+0,01=530,02 -> 530,02*2=1060,04=1,1*1^3 (because of the *2)

or

530,014+0,01=530,02

__4__-> 530,02__4__*2=1060,04__8__=1,1*1^3 (because of the *2)It doesn't make any difference until now but it does in a longer calculation which is correct??