9．口算
0 158830 158838 158844 158848 158854 158856 158860 158866 158868 158874 158880 158884 158886 158890 158896 158898 158904 158908 158910 158914 158916 158920 158922 158924 158925 158926 158928 158929 158930 158932 158934 158938 158940 158944 158946 158950 158956 158958 158964 158968 158970 158974 158980 158986 158988 158994 158998 159000 159006 159010 159016 159024 199269
| 0.3÷0.06=5 | 5-0.2= | 3.4×12= | 3.7+5= | 300×0.3%= |