一、把下面的小数化成最简分数，分数化成小数，除不尽的保留三位小数。
$0.6=$ $2.5=$ $0.35=$ $0.375=$
$0.16=$ $6.25=$ $2.8=$ $4.35=$
$\frac {5}{4}=$ $\frac {3}{20}=$ $\frac {7}{8}=$ $\frac {6}{25}=$
$\frac {5}{6}\approx$ $\frac {4}{15}\approx$ $\frac {4}{13}\approx$ $\frac {2}{9}\approx$

一、$\frac{3}{5}$ $\frac{5}{2}$ $\frac{7}{20}$ $\frac{3}{8}$
$\frac{4}{25}$ $\frac{25}{4}$ $\frac{14}{5}$ $\frac{87}{20}$
1.25 0.15 0.875 0.24
0.833 0.267 0.308 0.222

二、约分。
$\frac {26}{39}=$ $\frac {14}{18}=$ $\frac {48}{72}=$ $\frac {6}{15}=$
$\frac {33}{48}=$ $\frac {108}{36}=$ $\frac {10}{12}=$ $\frac {21}{35}=$
$\frac {81}{36}=$ $\frac {16}{28}=$ $\frac {75}{45}=$ $\frac {6}{30}=$
$\frac {24}{72}=$ $\frac {39}{91}=$ $\frac {80}{48}=$ $\frac {75}{125}=$
$\frac {18}{12}=$ $\frac {36}{54}=$ $\frac {58}{92}=$ $\frac {32}{40}=$
$\frac {175}{75}=$ $\frac {57}{19}=$ $\frac {13}{91}=$ $\frac {20}{36}=$
$\frac {80}{32}=$ $\frac {125}{120}=$ $\frac {39}{52}=$ $\frac {140}{28}=$
$\frac {24}{27}=$ $\frac {16}{56}=$ $\frac {60}{15}=$ $\frac {12}{21}=$
$\frac {34}{51}=$ $\frac {25}{120}=$ $\frac {105}{45}=$ $\frac {110}{99}=$
$\frac {8}{12}=$ $\frac {87}{27}=$ $\frac {33}{66}=$ $\frac {15}{48}=$

二、
$\dfrac{2}{3}$ $\dfrac{7}{9}$ $\dfrac{2}{3}$ $\dfrac{2}{5}$
$\dfrac{11}{16}$ $3$ $\dfrac{5}{6}$ $\dfrac{3}{5}$
$\dfrac{9}{4}$ $\dfrac{4}{7}$ $\dfrac{5}{3}$ $\dfrac{1}{5}$
$\dfrac{1}{3}$ $\dfrac{3}{7}$ $\dfrac{5}{3}$ $\dfrac{3}{5}$
$\dfrac{3}{2}$ $\dfrac{2}{3}$ $\dfrac{29}{46}$ $\dfrac{4}{5}$
$\dfrac{7}{3}$ $3$ $\dfrac{1}{7}$ $\dfrac{5}{9}$
$\dfrac{5}{2}$ $\dfrac{25}{24}$ $\dfrac{3}{4}$ $5$
$\dfrac{8}{9}$ $\dfrac{2}{7}$ $4$ $\dfrac{4}{7}$
$\dfrac{2}{3}$ $\dfrac{5}{24}$ $\dfrac{7}{3}$ $\dfrac{10}{9}$
$\dfrac{2}{3}$ $\dfrac{29}{9}$ $\dfrac{1}{2}$ $\dfrac{5}{16}$