1. 直接写出得数。
38 + 16 =
327 - 16 =
3.5 ÷ 7 =
(4.8 + 3.2) × 0.15 =
66 ÷ 0.6 =
1.3 ÷ 0.13 =
9.09 ÷ 0.09 =
6 × (10 ÷ 0.1) =
2.4 ÷ 0.8 =
2.1 × 0.4 =
0 ÷ 6.81 =
4.05 × 6 - 0.3 =
5.4 × 0.5 =
2.7 + 3.82 =
0.8 - 0.21 =
2 - 0.2 ÷ 0.5 =
15 ÷ $\frac{5}{8}$ =
20 × $\frac{7}{15}$ =
$\frac{3}{5}$ ÷ $\frac{9}{10}$ =
4.5 × ($\frac{1}{5}$ - $\frac{1}{9}$) =
33 × $\frac{9}{22}$ =
$\frac{7}{15}$ × $\frac{10}{21}$ =
27 ÷ $\frac{9}{7}$ =
$\frac{9}{4}$ × ($\frac{5}{8}$ ÷ $\frac{27}{32}$) =
$\frac{5}{9}$ ÷ $\frac{20}{27}$ =
$\frac{6}{7}$ ÷ $\frac{3}{14}$ =
0.45 × $\frac{5}{9}$ =
1.2 × 100 × $\frac{5}{24}$ =
$\frac{15}{16}$ ÷ 1.25 =
0.6 ÷ $\frac{2}{15}$ =
70 × $\frac{32}{35}$ =
$\frac{35}{38}$ ÷ $\frac{7}{19}$ ÷ $\frac{10}{7}$ =

1. 54
311
0.5
1.2
110
10
101
600
3
0.84
0
24
2.7
6.52
0.59
1.6
24
$\frac{28}{3}$
$\frac{2}{3}$
0.4
$\frac{27}{2}$
$\frac{2}{9}$
21
$\frac{5}{3}$
$\frac{3}{4}$
4
0.25
25
0.75
$\frac{9}{2}$
64
$\frac{7}{4}$

2. 用竖式计算，带☆的要验算。
8÷0.32=
5.08×0.64≈
（得数保留一位小数）
☆15.08÷2.6=
6.62×5.4=
0.85×24.6=
9.568÷0.23=

2. 25
3.3
5.8
35.748
20.91
41.6
竖式及验算略

甲数除以乙数的商是0.7，那么乙数和甲数的比是()；
被减数与减数的比是13∶9，那么减数与差的比是()。

10:7 9:4