8.计算,能简便计算的要简算.
| $\frac{1}{4}$×$\frac{2}{5}$+3÷4×$\frac{2}{5}$ | 37$\frac{2}{5}$-18.52+12.6-1.48 | ($\frac{3}{8}$-0.25)÷($\frac{5}{6}$-$\frac{5}{9}$) |
| 3.68×[1÷(2$\frac{1}{10}$-2.09)] | $\frac{8}{15}$×[$\frac{5}{6}$÷($\frac{7}{9}$-$\frac{1}{3}$)] | ($\frac{7}{8}$+$\frac{3}{4}$-$\frac{5}{6}$)÷$\frac{1}{24}$ |
7.吸烟不仅有害健康而且浪费钱财.如果一位吸烟者每天吸一包18元的香烟那么他每年(365天)花在吸烟上的钱是( )元.
0 156017 156025 156031 156035 156041 156043 156047 156053 156055 156061 156067 156071 156073 156077 156083 156085 156091 156095 156097 156101 156103 156107 156109 156111 156112 156113 156115 156116 156117 156119 156121 156125 156127 156131 156133 156137 156143 156145 156151 156155 156157 156161 156167 156173 156175 156181 156185 156187 156193 156197 156203 156211 199269
| A. | 365 | B. | 6570 | C. | 6480 | D. | 800 |