6.已知a×$\frac{2}{5}$=b÷$\frac{3}{8}$,那么a和b相比( )
| A. | a>b | B. | a<b | C. | 无法比较 |
5.在12后面添上一个百分号,这个数就( )
0 126941 126949 126955 126959 126965 126967 126971 126977 126979 126985 126991 126995 126997 127001 127007 127009 127015 127019 127021 127025 127027 127031 127033 127035 127036 127037 127039 127040 127041 127043 127045 127049 127051 127055 127057 127061 127067 127069 127075 127079 127081 127085 127091 127097 127099 127105 127109 127111 127117 127121 127127 127135 199269
| A. | 扩大100倍 | B. | 缩小100倍 | C. | 大小不变 |