17.2+2.8=
0.6×0.9=
8÷0.8=
0.25a+0.5a=
123÷100=
0.74×100=
2.7÷3=
3-1.48=
0.25a+0.05×2=
50×8=
25×12=
125×32=
560÷8÷7=
2a+4a=
7x-4x=
5m+4m=
a×a=