1.53-0.5=
7.8+0.9=
12÷0.4=
102=
23=
4×0.25=
2.9+3.7+2.1=
1.25×5×8=
7.6×8+2.4×8=
3.14×8=
31.4÷3.14=
16×3.14=
12.56÷3.14=
3.14×64=
100.48÷3.14=
60×3.14=
3.14×202=
4x-3x=
5a× a=
8b÷2=
4.5+5=
1.25×80
0.03÷0.01=
0.9-0.09=
23m-11.2m-0.8m=