1. 直接写出得数。
实际用时：分钟
$9.08+1.6=$
$659×10=$
$180+360=$
$500-306=$
$6:20=$
$1\frac{4}{5}:0.9=$
$\frac{8}{11}×\frac{11}{8}=$
$0.36×\frac{5}{6}=$
$\frac{1}{5}+\frac{4}{5}÷\frac{4}{7}=$
$\frac{5}{12}×4÷\frac{1}{15}=$
$649-328=$
$280\%÷20\%=$
$2.9-1.8=$
$5.4×2=$
$\frac{1}{4}:125\%=$
$10:\frac{5}{3}=$
$\frac{1}{4}-\frac{1}{5}=$
$5÷\frac{1}{5}=$
$25\%+35\%+75\%=$
$1-3÷8=$
$1.2÷0.1=$
$500÷25=$
$450\%+150\%=$
$240×30=$
$\frac{5}{14}:\frac{10}{7}=$
$\frac{10}{19}:\frac{1}{19}=$
$\frac{30}{13}÷\frac{15}{13}=$
$\frac{3}{13}+\frac{5}{13}=$
$4-4×50\%=$
$100×(50\%-31\%)=$
$0.05×0.7=$
$707÷7=$
$305×5=$
$440÷22=$
$0.25:\frac{1}{20}=$
$\frac{5}{7}:2.5=$
$\frac{1}{2}+\frac{3}{8}=$
$2-1\frac{3}{8}=$
$\frac{1}{5}×\frac{1}{6}÷\frac{1}{5}×\frac{1}{6}=$
$21×(\frac{1}{3}-\frac{1}{7})=$

1. $10.68$ $321$ $12$ $0.035$
$6590$ $14$ $20$ $101$
$540$ $1.1$ $600\%$ $1525$
$194$ $10.8$ $7200$ $20$
$\frac{3}{10}$ $\frac{1}{5}$ $\frac{1}{4}$ $5$
$2$ $6$ $10$ $\frac{2}{7}$
$1$ $\frac{1}{20}$ $2$ $\frac{7}{8}$
$0.3$ $25$ $\frac{8}{13}$ $\frac{5}{8}$
$\frac{8}{5}$ $135\%$ $2$ $\frac{1}{36}$
$25$ $\frac{5}{8}$ $19$ $4$

2. 计算下面各题。
$3.68×[1÷(210\% - 2.09)]$
$11.24 - 3.75 - 1.25×5$
$35×98 + 70$
$4.5×\frac{1}{4} + 16.5×25\% - 0.25$
$(0.75×\frac{3}{5} - \frac{1}{10})÷\frac{7}{8}$
$\frac{15}{14} - \frac{1}{3}×\frac{9}{8} - \frac{5}{8}$

2. $368$ $1.24$ $3500$
$5$ $\frac{2}{5}$ $\frac{1}{14}$