5.45×0.65.45
4.32÷1.024.32
(M-0. 98)×0.7M×0.7-0.7
15.75÷0.21=
157.5÷21=
0.75×2.1=
1.234×0.6780.678 4.98+0.7894.98×0.789
1.26×0.03=