共30题用时5分钟

4.25×4=

12.5×0.8=

6×6.5=

0.07×0.5=

3.2×0.5=

25×0.4=

0.8×0.9=

0.6×100=

17.5×0.01=

33×0.04=

0.09×0.9=

4.7×0.1=

6.5×4=

2.3×0.06=

15×0.08=

54×0.8=

3.6×0.7=

1.6×0.03=

0.75×0.4=

23×0.4=

4.1×0.6=

2.2×0.05=

3×0.09=

4.6×0.4=

7.7×0.8=

0.012×20=

2.5×0.4=

8.5×0.2=

0.66×0.3=

6.5×0.4=