1.把下面的分数化成带分数或整数。（每题1★）
$\frac{11}{2}=$
$\frac{9}{5}=$
$\frac{13}{7}=$
$\frac{23}{7}=$
$\frac{18}{12}=$
$\frac{34}{17}=$
$\frac{25}{15}=$
$\frac{34}{20}=$
$\frac{46}{23}=$
$\frac{36}{24}=$
$\frac{54}{27}=$
$\frac{28}{13}=$
$\frac{45}{30}=$
$\frac{44}{11}=$
$\frac{16}{3}=$
$\frac{125}{25}=$

1.$5\frac{1}{2}$ $1\frac{4}{5}$ $1\frac{6}{7}$ $3\frac{2}{7}$
$1\frac{1}{2}$ 2 $1\frac{2}{3}$ $1\frac{7}{10}$
2 $1\frac{1}{2}$ 2 $2\frac{2}{13}$
$1\frac{1}{2}$ 4 $5\frac{1}{3}$ 5

2.计算下面各题，能简算的要简算。（每题3★）
0.8+5×0.29-2
1.25×7.2
9.83×1.5+6.17×1.5

2.0.25 9 24

3.把下面每组中的两个分数通分。(每题 3 ★)
(1)$\frac{11}{15}$和$\frac{5}{6}$
(2)$\frac{13}{12}$和$\frac{6}{5}$
(3)$\frac{4}{9}$和$\frac{7}{16}$
(4)$\frac{13}{16}$和$\frac{19}{24}$
(5)$1\frac{3}{5}$和$1\frac{7}{8}$
(6)$\frac{5}{12}$、$\frac{13}{18}$和$\frac{17}{24}$

3.(1)$\frac{11}{15}=\frac{22}{30}$ $\frac{5}{6}=\frac{25}{30}$
(2)$\frac{13}{12}=\frac{65}{60}$ $\frac{6}{5}=\frac{72}{60}$
(3)$\frac{4}{9}=\frac{64}{144}$ $\frac{7}{16}=\frac{63}{144}$
(4)$\frac{13}{16}=\frac{39}{48}$ $\frac{19}{24}=\frac{38}{48}$
(5)$1\frac{3}{5}=\frac{64}{40}$ $1\frac{7}{8}=\frac{75}{40}$
(6)$\frac{5}{12}=\frac{30}{72}$ $\frac{13}{18}=\frac{52}{72}$ $\frac{17}{24}=\frac{51}{72}$