①42﹣18.48÷4.2
②(0.6+1÷2.5)×7.4
③125×4×0.8×2.5
④4.125×5.4+2.6×4.125
5.4÷3=
6.5÷0.01=
6.18÷0.6=
0.015÷0.3=
10÷0.5=
2.4×5=
0.42-0.32=
1.25×1.6=
6.4÷8= 2.5÷0.5= 0.48÷0.6= 0.21×3=
0.39÷1.3= 0.9×0.3= 4.39+2.1= 7÷100=
1÷0.25= 0.25×4÷2=