102, 6 x 10 =

(a)  

102,6 x 1000 =

(a)  

31 x 20 =

(a)  

40 x 500 =

(a)  

89, 95 x 100 =

(a)  

89, 95 X 10000 =

(a)  

389, 246 x 10 =

(a)  

523, 12 x 1000 =

(a)  

34, 259 x 100 =

(a)  

0, 385 x 100 =

(a)  

34, 259 : 10 =

(a)  

341023 : 1000 =

(a)  

89, 15 + 11 =

(a)  

298 + 12 =

(a)  

315 - 18 =

(a)  

143 + 17 =

(a)  

299 - 80 =

(a)  

98, 22 - 0 , 22 =

(a)  

98 , 22 + 0 , 78 =

(a)