12.直接写出得数
0 159787 159795 159801 159805 159811 159813 159817 159823 159825 159831 159837 159841 159843 159847 159853 159855 159861 159865 159867 159871 159873 159877 159879 159881 159882 159883 159885 159886 159887 159889 159891 159895 159897 159901 159903 159907 159913 159915 159921 159925 159927 159931 159937 159943 159945 159951 159955 159957 159963 159967 159973 159981 199269
260-92= | 18×7= | 19×50= | 200×40= |
90万-66万= | 420×50= | 18亿+23亿= | 840+80= |
850×0= | 390÷3= | 67×8= | 3×33= |
29+18+32= | 50×7×2= | 512-98= | 25×16= |