Calculate and pay attention to the accuracy of the answer.

a) [[$ 5000 \;\text{g} + 0,5 \;\text{g} ≈ $]] g

b) [[$ 0.002 \;\text{mm} + 0,5 \;\text{mm} + 0,00009 \;\text{mm} ≈
$]] mm

c) [[$ 2.123 \;\text{kg} + 1,6 \;\text{kg} + 0,0003 \;\text{kg} + 7,08 \;\text{kg} ≈ $]] kg

d) [[$ 12 \;\text{cm} - 3 \;\text{cm} + 190 \;\text{cm} - 8,5 \;\text{cm} ≈ $]] cm