共30题用时5分钟

10-1.8-7.2=

0.43+3.57=

2.5×4×12=

7.5x-3x=

0.9×0.8=

1.47÷0.7=

a+3a+7a=

0.96÷3=

5.4÷6=

1.05×100=

1÷0.5=

128÷0.4=

78÷0.6=

65÷0.05=

9.6÷3.2=

1000÷1.25=

7.2÷0.002=

81÷0.03=

78÷0.06=

45÷0.005=

42÷0.003=

32÷0.4=

36÷0.18=

54÷0.12=

0.0036÷3.6=

8.6÷2=

7.5÷5=

120÷0.024=

8.6÷0.002=

10÷2.5=