$$2+0,4=$$

(a)  

$$2+0,04=$$

(a)  

$$2-0,04=$$

(a)  

$$2-0,4=$$

(a)  

$$0,4-0,02=$$

(a)  

$$0,4\times0,02=$$

(a)  

$$2\times0,4=$$

(a)  

$$2\times0,04=$$

(a)  

$$2\div0,04=$$

(a)  

$$2\div0,4=$$

(a)  

$$0,4\div0,02=$$

(a)  

$$0,02\div0,4=$$

(a)  

$$0,4\div2=$$

(a)  

$$0,04\div2=$$

(a)