2.5×0.4=
6.3÷9=
7.6+0.6=
10.5-5=
200×0.5=
57÷1.9=
4÷80=
0.45÷0.3=
1.29-1.29÷1.29=
2.3×5=
0.3+0.01=
4÷0.5=
6.7-2.3=
2.3÷0.01=