5．直接写出得数．
| 0.75×4= | 9×0.57= | 1.2×0.1+0.9= | 3÷1.5= |
| 3.45+6.55= | 2.5×3.6-3.6= | 8×0.125= | 0.65×101= |
| 8×（1.25+2.5）= | 0.56×4.2= | 5.68÷0.8= | （0.1-0.09）÷0.1= |
| 1÷0.02= | 10-6.75= |
17．小红的邮票数比小华多$\frac{1}{4}$，小红拿出他的邮票数的（ ）给小华，两人一样多．
0 159811 159819 159825 159829 159835 159837 159841 159847 159849 159855 159861 159865 159867 159871 159877 159879 159885 159889 159891 159895 159897 159901 159903 159905 159906 159907 159909 159910 159911 159913 159915 159919 159921 159925 159927 159931 159937 159939 159945 159949 159951 159955 159961 159967 159969 159975 159979 159981 159987 159991 159997 160005 199269
| A． | $\frac{1}{8}$ | B． | $\frac{1}{4}$ | C． | $\frac{1}{10}$ |