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$\frac{8}{9} × 4= $
$\frac{3}{8} × \frac{16}{9}= $
$\frac{2}{3} × 6.3= $
$\frac{5}{6} × 7.2= $
$9 × \frac{7}{18}= $
$1.8 × \frac{1}{6}= $
$\frac{5}{9} × \frac{3}{4} + \frac{5}{9} × \frac{1}{4}= $
$\frac{1}{5} + \frac{2}{9} × \frac{3}{10}= $
$4 + 4 × \frac{1}{8}= $
$3 - 2 × \frac{2}{5}= $
$24 × \left( \frac{1}{6} + \frac{1}{8} \right)= $
$\frac{2}{3} × \frac{3}{5} × \frac{5}{8}= $
$3.6 × \frac{2}{3}= $
$\frac{2}{5} × 0.4= $
$\frac{4}{5} × \frac{1}{2}= $
$0.45 × \frac{3}{5}= $
$\frac{4}{25} × 100= $
$\left( \frac{3}{4} + \frac{5}{8} \right) × 32= $
$\frac{5}{4} × \frac{1}{8} × 16= $
$4 + 72 × \frac{5}{12}= $
$\frac{3}{8} × 6 × 4= $
$0.8 × 7.9 × \frac{5}{4}= $
$1\frac{7}{9} - \left( \frac{7}{9} + \frac{11}{13} \right)= $
$1.6 × \left( 1 - \frac{3}{4} \right)= $
$\frac{8}{9} × 4= $
$\frac{32}{9}$
$\frac{3}{8} × \frac{16}{9}= $
$\frac{2}{3}$
$\frac{2}{3} × 6.3= $
4.2
$\frac{5}{6} × 7.2= $
6
$9 × \frac{7}{18}= $
$\frac{7}{2}$
$1.8 × \frac{1}{6}= $
0.3
$\frac{5}{9} × \frac{3}{4} + \frac{5}{9} × \frac{1}{4}= $
$\frac{5}{9}$
$\frac{1}{5} + \frac{2}{9} × \frac{3}{10}= $
$\frac{4}{15}$
$4 + 4 × \frac{1}{8}= $
4.5
$3 - 2 × \frac{2}{5}= $
$\frac{11}{5}$
$24 × \left( \frac{1}{6} + \frac{1}{8} \right)= $
7
$\frac{2}{3} × \frac{3}{5} × \frac{5}{8}= $
$\frac{1}{4}$
$3.6 × \frac{2}{3}= $
2.4
$\frac{2}{5} × 0.4= $
0.16
$\frac{4}{5} × \frac{1}{2}= $
$\frac{2}{5}$
$0.45 × \frac{3}{5}= $
0.27
$\frac{4}{25} × 100= $
16
$\left( \frac{3}{4} + \frac{5}{8} \right) × 32= $
44
$\frac{5}{4} × \frac{1}{8} × 16= $
$\frac{5}{2}$
$4 + 72 × \frac{5}{12}= $
34
$\frac{3}{8} × 6 × 4= $
9
$0.8 × 7.9 × \frac{5}{4}= $
7.9
$1\frac{7}{9} - \left( \frac{7}{9} + \frac{11}{13} \right)= $
$\frac{2}{13}$
$1.6 × \left( 1 - \frac{3}{4} \right)= $
0.4
答案：
解析：本题主要考查分数的四则运算，包括分数乘法、分数与小数的乘法、分数的四则混合运算等。
答案为：
$\frac{8}{9} × 4 = \frac{32}{9}$
$\frac{3}{8} × \frac{16}{9} = \frac{2}{3}$
$\frac{2}{3} × 6.3 = 4.2$
$\frac{5}{6} × 7.2 = 6$
$9 × \frac{7}{18} = \frac{7}{2}$
$1.8 × \frac{1}{6} = 0.3$
$\frac{5}{9} × \frac{3}{4} + \frac{5}{9} × \frac{1}{4} = \frac{5}{9}$
$\frac{1}{5} + \frac{2}{9} × \frac{3}{10} = \frac{4}{15}$
$4 + 4 × \frac{1}{8} = 4.5$
$3 - 2 × \frac{2}{5} = \frac{11}{5}$
$24 × \left( \frac{1}{6} + \frac{1}{8} \right) = 7$
$\frac{2}{3} × \frac{3}{5} × \frac{5}{8} = \frac{1}{4}$
$3.6 × \frac{2}{3} = 2.4$
$\frac{2}{5} × 0.4 = 0.16$
$\frac{4}{5} × \frac{1}{2} = \frac{2}{5}$
$0.45 × \frac{3}{5} = 0.27$
$\frac{4}{25} × 100 = 16$
$\left( \frac{3}{4} + \frac{5}{8} \right) × 32 = 44$
$\frac{5}{4} × \frac{1}{8} × 16 = \frac{5}{2}$
$4 + 72 × \frac{5}{12} = 34$
$\frac{3}{8} × 6 × 4 = 9$
$0.8 × 7.9 × \frac{5}{4} = 7.9$
$1\frac{7}{9} - \left( \frac{7}{9} + \frac{11}{13} \right) = \frac{2}{13}$
$1.6 × \left( 1 - \frac{3}{4} \right) = 0.4$
答案为：
$\frac{8}{9} × 4 = \frac{32}{9}$
$\frac{3}{8} × \frac{16}{9} = \frac{2}{3}$
$\frac{2}{3} × 6.3 = 4.2$
$\frac{5}{6} × 7.2 = 6$
$9 × \frac{7}{18} = \frac{7}{2}$
$1.8 × \frac{1}{6} = 0.3$
$\frac{5}{9} × \frac{3}{4} + \frac{5}{9} × \frac{1}{4} = \frac{5}{9}$
$\frac{1}{5} + \frac{2}{9} × \frac{3}{10} = \frac{4}{15}$
$4 + 4 × \frac{1}{8} = 4.5$
$3 - 2 × \frac{2}{5} = \frac{11}{5}$
$24 × \left( \frac{1}{6} + \frac{1}{8} \right) = 7$
$\frac{2}{3} × \frac{3}{5} × \frac{5}{8} = \frac{1}{4}$
$3.6 × \frac{2}{3} = 2.4$
$\frac{2}{5} × 0.4 = 0.16$
$\frac{4}{5} × \frac{1}{2} = \frac{2}{5}$
$0.45 × \frac{3}{5} = 0.27$
$\frac{4}{25} × 100 = 16$
$\left( \frac{3}{4} + \frac{5}{8} \right) × 32 = 44$
$\frac{5}{4} × \frac{1}{8} × 16 = \frac{5}{2}$
$4 + 72 × \frac{5}{12} = 34$
$\frac{3}{8} × 6 × 4 = 9$
$0.8 × 7.9 × \frac{5}{4} = 7.9$
$1\frac{7}{9} - \left( \frac{7}{9} + \frac{11}{13} \right) = \frac{2}{13}$
$1.6 × \left( 1 - \frac{3}{4} \right) = 0.4$
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