11.下面各题怎样算简便就怎样算.
253+101 | 25×47×4 | 74×201 |
23×54+46×23 | 99×38 | 66×101-66 |
5.484÷6,商的末尾有( )个0.
0 157836 157844 157850 157854 157860 157862 157866 157872 157874 157880 157886 157890 157892 157896 157902 157904 157910 157914 157916 157920 157922 157926 157928 157930 157931 157932 157934 157935 157936 157938 157940 157944 157946 157950 157952 157956 157962 157964 157970 157974 157976 157980 157986 157992 157994 158000 158004 158006 158012 158016 158022 158030 199269
A. | 1 | B. | 2 | C. | 3 | D. | 0 |