4.小华面向东站着,他向左转,又向右转,这时他面向( )方.
A. | 东 | B. | 西 | C. | 南 | D. | 北 |
19.竖式计算.
0 159918 159926 159932 159936 159942 159944 159948 159954 159956 159962 159968 159972 159974 159978 159984 159986 159992 159996 159998 160002 160004 160008 160010 160012 160013 160014 160016 160017 160018 160020 160022 160026 160028 160032 160034 160038 160044 160046 160052 160056 160058 160062 160068 160074 160076 160082 160086 160088 160094 160098 160104 160112 199269
4.21-2.7= | 3.89+41.2= | 53×24= |
85×11= | 82×35= | 3.9+17.2= |