Answer
0.01 kg; 0.005 kg; 0.005; 0.5 %
Work Step by Step
For the given measurement, we have
The precision is 0.01 kg
The greatest possible error is one-half the precision
$0.5\cdot 0.01 \ kg= 0.005 \ kg$
The relative error is
$relative~error=\dfrac{greatest~possible~error}{measurement}$
$\frac{0.005\ kg}{1.00\ kg}=0.005$
The percent of error is $0.5\%$
