7.2÷0.01=
2.5×0.8=
5.4÷0.06=
1.5+2.85=
13.7÷100=
3.1×0.8=
4.23×0.2=
2.5×4÷2.5×0.4=
16÷x=2.5
8.4x+3x=228
1.5x-4×2.1=2.1
5(x-4.5)=40
0.125×80=
9.8÷0.5=
4.8×0.4=
0.4×0.65=
4.2÷0.07=
12÷0.03=
0.45÷0.03=
2.33×0.2×5=
时间/时
1
2
3
4
5
6
……
路程/km
60