157 - 69 = ?

(a)  

1 764 - 1 361 = ?

(a)  

6 275 - 3 052 = ?

(a)  

974 - 585 = ?

(a)  

4 314 - 2 415 = ?

(a)  

4 565 - 979 = ?

(a)  

651 - 555 = ?

(a)