1.5×4=
1.35+2.5=
1.03+3=
4.5-2.3=
0.3×0.8=
0÷5.23=
0.05×6=
5.1÷0.01=
0.61+99×0.61=
0.2×5÷0.2×5=
0.8÷2=
1.05÷5=
24÷1.2=
0.75÷0.25=
2.4×0.5=
6.3+0.37 =
8.2÷4=
91÷0.13=
每天修的米数
240
60
48
40
修的天数
2
8
10
12