$a)0,9{\text{dm}}^3=0,9\cdot 1000{\text{cm}}^3=900{\text{cm}}^3$

$\text{Zatem}\diamond =900$  

$450{\text{cm}}^3=450\cdot 0,001{\text{dm}}^3=0,45{\text{dm}}^3$ $450{\text{cm}}^3=450\cdot 0,001{\text{dm}}^3=0,45{\text{dm}}^3$  

$\text{Zatem}\diamond =0,45$    

$b)53{\text{cm}}^3=53\cdot 0,001{\text{dm}}^3=0,053{\text{dm}}^3$  

$\text{Zatem}\diamond =0,053$  
  

$0,15{\text{m}}^3=0,15\cdot 1000{\text{dm}}^3=150{\text{dm}}^3$  

$\text{Zatem}\diamond =150$   

 

$c)75{\text{dm}}^3=75\text{l}$  

$\text{Zatem}\diamond =75$  
   

$6\text{l}=6\cdot 1000\text{ml}=6000\text{ml}$  

$\text{Zatem}\diamond =6000$