10.
0 159892 159900 159906 159910 159916 159918 159922 159928 159930 159936 159942 159946 159948 159952 159958 159960 159966 159970 159972 159976 159978 159982 159984 159986 159987 159988 159990 159991 159992 159994 159996 160000 160002 160006 160008 160012 160018 160020 160026 160030 160032 160036 160042 160048 160050 160056 160060 160062 160068 160072 160078 160086 199269
用心感应. 36+78= | 79-68= | 320+60= | 34+25= |
55-29= | 870-500= | 170+230= | 19+66= |
660+220= | 90+190= | 74+37= | 170-55= |
1500-800= | 56+12= | 63-47= | 1100-400= |
68+78= | 81+29= | 78-54= | 400+800= |