0.5415=×=×
5.415÷9.5=
54.15÷=0.57
503.2÷68= 503.2÷6.8=
50.32÷68= 5.032÷6.8=
A.左 B.右 C.两 D.三
5.6×2.3= ×0.23=12.88
5.6×=128.8 0.56×=0.1288
36.75=×=×
3.675=×=×
504×3.9= 50.4×3.9=
50.4×0.39= 50.4×0.039=