50x90x2=

(a)  

99x70=

(a)  

88+90+12=

(a)  

25x45x4

(a)  

2_x4+34=134

(a)  

125+125+75x8

(a)  

1+2+3+4+5+6+7+8+9+10=

(a)  

125 x80除以10=

(a)