一、直接写出得数。（共32分）
$\frac{3}{2} ÷ \frac{2}{3} =$
$4.7 + 5.3 =$
$3.06 - 2.6 =$
$5.8 - 3.2 ÷ 0.8 =$
$2.8 × 50 =$
$50 × 0.25 =$
$0.66 + 0.44 =$
$1.25 × 0.73 × 8 =$
$1 ÷ 0.9 =$
$35.1 - 2.3 =$
$9 ÷ \frac{6}{7} =$
$76.3 - 8.9 - 9.4 =$
$5.1 + 3.9 =$
$4.3 × 0.2 =$
$2.8 ÷ 0.14 =$
$0.3 × 10 ÷ 0.1 =$
$\frac{5}{9} ÷ 6 =$
$54 × \frac{16}{27} =$
$6 - \frac{3}{2} =$
$24 ÷ ( \frac{1}{3} - \frac{1}{6} ) =$
$0.8 ÷ 1.8 =$
$\frac{1}{9} ÷ \frac{2}{3} =$
$44 ÷ \frac{11}{9} =$
$1.6 × 3 + 6.2 =$
$\frac{13}{33} × 22 =$
$3.6 ÷ \frac{1}{5} =$
$0.12 ÷ 0.002 =$
$\frac{4}{5} ÷ 2 × \frac{1}{2} =$
$4.4 ÷ \frac{1}{3} =$
$4.2 - 0.35 =$
$2.7 × 0.5 =$
$\frac{1}{6} × \frac{8}{25} × \frac{3}{4} =$

$\frac{9}{4}$
$10$
$0.46$
$1.8$
$140$
$12.5$
$1.1$
$7.3$
$\frac{10}{9}$
$32.8$
$10.5$
$58$
$9$
$0.86$
$20$
$30$
$\frac{5}{54}$
$32$
$4.5$
$144$
$\frac{4}{9}$
$\frac{1}{6}$
$36$
$11$
$\frac{26}{3}$
$18$
$60$
$\frac{1}{5}$
$13.2$
$3.85$
$1.35$
$\frac{1}{25}$

二、用竖式计算，带☆的要验算。（共20分）
11.7÷2.6=
8.03×0.14=
☆3.915÷0.87=
☆2.3×0.17=
3.9÷0.015=
32.8÷2.3≈
（得数保留两位小数）

4.5
1.1242
4.5
0.391
260
14.26
竖式及验算略

三、计算下面各题，怎样算简便就怎样算。（共24分）
$34.5×101 - 34.5$
$4.8×1.5 + 3.2÷2.5$
$25.2÷[14.2 - (7.2 + 2.8)]$
$762 - (0.44×13 + 750)$
$(\frac{2}{17} + \frac{1}{5})×5 + \frac{7}{17}$
$\frac{7}{8}×[(\frac{1}{2} + \frac{3}{4})÷\frac{15}{16}]$

3450
8.48
6
6.28
2
$\frac{7}{6}$