3.直接写出得数.
| 1.53-0.5= | 7.8+0.9= | 72= | 83= |
| 4×0.25= | 1.25×5×8= | 7.6×8+2.4×8= | 12÷0.4= |
| 0.56+4.44= | 2.9+3.7+2.1= |
2.下面的平面图中,( )号不能折成正方体.
0 133743 133751 133757 133761 133767 133769 133773 133779 133781 133787 133793 133797 133799 133803 133809 133811 133817 133821 133823 133827 133829 133833 133835 133837 133838 133839 133841 133842 133843 133845 133847 133851 133853 133857 133859 133863 133869 133871 133877 133881 133883 133887 133893 133899 133901 133907 133911 133913 133919 133923 133929 133937 199269
| A. | B. | C. |