1．直接写出得数
0 159831 159839 159845 159849 159855 159857 159861 159867 159869 159875 159881 159885 159887 159891 159897 159899 159905 159909 159911 159915 159917 159921 159923 159925 159926 159927 159929 159930 159931 159933 159935 159939 159941 159945 159947 159951 159957 159959 159965 159969 159971 159975 159981 159987 159989 159995 159999 160001 160007 160011 160017 160025 199269
| 2.5×8= | 0.12×3= | 0.125÷0.25= | 13÷4= |
| 12-6.2-3.8= | 2.14-0.9= | 72.8÷0.8= | 0.65×1.02= |
| 7÷0.25= | （1.5+0.25）×4= | 1.25×0.8×0.5= | 3.5+3.5×3= |