4．直接写出得数
0 160742 160750 160756 160760 160766 160768 160772 160778 160780 160786 160792 160796 160798 160802 160808 160810 160816 160820 160822 160826 160828 160832 160834 160836 160837 160838 160840 160841 160842 160844 160846 160850 160852 160856 160858 160862 160868 160870 160876 160880 160882 160886 160892 160898 160900 160906 160910 160912 160918 160922 160928 160936 199269
| 2.8-1.91= | 3.4×0.2= | 0.9×20= | 0.5×0.18= |
| 3.2+0.27= | 2.56÷2.56= | 0.16÷0.02= | 0.8×0.9= |