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一、直接写出得数。（共 32 分）
$\frac{7}{16}+\frac{5}{8}=$ $\frac{2}{3}+\frac{4}{3}=$ $\frac{5}{8}-\frac{1}{2}=$ $\frac{3}{4}+\frac{5}{8}-\frac{7}{16}=$
$\frac{3}{5}+\frac{7}{9}=$ $1-\frac{5}{8}=$ $\frac{7}{9}-\frac{1}{3}=$ $\frac{7}{8}-\frac{1}{4}+\frac{3}{2}=$
$\frac{4}{5}-\frac{7}{45}=$ $\frac{7}{16}+\frac{3}{4}=$ $\frac{2}{3}-\frac{1}{5}=$ $\frac{5}{6}-\frac{3}{14}+\frac{1}{6}=$
$\frac{4}{5}+\frac{1}{10}=$ $3-\frac{1}{10}=$ $\frac{4}{7}+\frac{1}{3}=$ $\frac{6}{7}+\frac{1}{2}+\frac{1}{14}=$
$\frac{7}{10}-\frac{1}{2}=$ $\frac{3}{8}+\frac{2}{5}=$ $\frac{1}{2}+\frac{3}{11}=$ $1-\frac{5}{14}+\frac{9}{28}=$
$\frac{3}{7}+\frac{1}{8}=$ $\frac{7}{8}-\frac{3}{4}=$ $\frac{5}{12}+\frac{1}{3}=$ $\frac{3}{2}+\frac{1}{5}+\frac{1}{4}=$
$\frac{2}{3}-\frac{1}{2}=$ $3+\frac{2}{3}=$ $\frac{7}{10}-\frac{2}{15}=$ $3-\frac{4}{7}-\frac{3}{7}=$
$\frac{1}{2}+\frac{5}{8}=$ $\frac{3}{8}-\frac{1}{4}=$ $\frac{3}{4}-\frac{1}{3}=$ $\frac{8}{3}+\frac{1}{2}-\frac{7}{6}=$
$\frac{7}{16}+\frac{5}{8}=$ $\frac{2}{3}+\frac{4}{3}=$ $\frac{5}{8}-\frac{1}{2}=$ $\frac{3}{4}+\frac{5}{8}-\frac{7}{16}=$
$\frac{3}{5}+\frac{7}{9}=$ $1-\frac{5}{8}=$ $\frac{7}{9}-\frac{1}{3}=$ $\frac{7}{8}-\frac{1}{4}+\frac{3}{2}=$
$\frac{4}{5}-\frac{7}{45}=$ $\frac{7}{16}+\frac{3}{4}=$ $\frac{2}{3}-\frac{1}{5}=$ $\frac{5}{6}-\frac{3}{14}+\frac{1}{6}=$
$\frac{4}{5}+\frac{1}{10}=$ $3-\frac{1}{10}=$ $\frac{4}{7}+\frac{1}{3}=$ $\frac{6}{7}+\frac{1}{2}+\frac{1}{14}=$
$\frac{7}{10}-\frac{1}{2}=$ $\frac{3}{8}+\frac{2}{5}=$ $\frac{1}{2}+\frac{3}{11}=$ $1-\frac{5}{14}+\frac{9}{28}=$
$\frac{3}{7}+\frac{1}{8}=$ $\frac{7}{8}-\frac{3}{4}=$ $\frac{5}{12}+\frac{1}{3}=$ $\frac{3}{2}+\frac{1}{5}+\frac{1}{4}=$
$\frac{2}{3}-\frac{1}{2}=$ $3+\frac{2}{3}=$ $\frac{7}{10}-\frac{2}{15}=$ $3-\frac{4}{7}-\frac{3}{7}=$
$\frac{1}{2}+\frac{5}{8}=$ $\frac{3}{8}-\frac{1}{4}=$ $\frac{3}{4}-\frac{1}{3}=$ $\frac{8}{3}+\frac{1}{2}-\frac{7}{6}=$
答案
一 $\frac {17}{16}$ 2 $\frac {1}{8}$ $\frac {15}{16}$ $\frac {62}{45}$ $\frac {3}{8}$ $\frac {4}{9}$ $\frac {17}{8}$ $\frac {29}{45}$ $\frac {19}{16}$ $\frac {7}{15}$ $\frac {11}{14}$ $\frac {9}{10}$ $2\frac {9}{10}$ $\frac {19}{21}$ $\frac {10}{7}$ $\frac {1}{5}$ $\frac {31}{40}$ $\frac {17}{22}$ $\frac {27}{28}$ $\frac {31}{56}$ $\frac {1}{8}$ $\frac {3}{4}$ $\frac {39}{20}$ $\frac {1}{6}$ $3\frac {2}{3}$ $\frac {17}{30}$ 2
$\frac {9}{8}$ $\frac {1}{8}$ $\frac {5}{12}$ 2
$\frac {9}{8}$ $\frac {1}{8}$ $\frac {5}{12}$ 2
二、计算下面各题，能简算的要简算。（共 24 分）
$\frac{1}{6}-\frac{1}{8}+\frac{5}{6}$ $\frac{9}{10}-(\frac{1}{6}+\frac{7}{10})$ $\frac{6}{7}+\frac{15}{16}+(\frac{1}{7}-\frac{1}{16})$
$\frac{11}{23}+\frac{4}{15}+\frac{12}{23}+\frac{11}{15}$ $\frac{7}{15}-(\frac{5}{12}-\frac{8}{15})-\frac{7}{12}$ $999\frac{11}{12}+99\frac{11}{12}+9\frac{11}{12}+\frac{1}{4}$
$\frac{1}{6}-\frac{1}{8}+\frac{5}{6}$ $\frac{9}{10}-(\frac{1}{6}+\frac{7}{10})$ $\frac{6}{7}+\frac{15}{16}+(\frac{1}{7}-\frac{1}{16})$
$\frac{11}{23}+\frac{4}{15}+\frac{12}{23}+\frac{11}{15}$ $\frac{7}{15}-(\frac{5}{12}-\frac{8}{15})-\frac{7}{12}$ $999\frac{11}{12}+99\frac{11}{12}+9\frac{11}{12}+\frac{1}{4}$
答案
二 $\frac {7}{8}$ $\frac {1}{30}$ $1\frac {7}{8}$ 2 0 1110
