《2025年阳光同学暑假口算五升六数学》

1. 直接写出得数。
$\frac {1}{10}+\frac {2}{5}=$ $\frac {7}{9}-\frac {1}{3}=$ $\frac {1}{2}+\frac {1}{7}=$ $1-\frac {4}{7}=$
$\frac {2}{3}+\frac {2}{9}=$ $\frac {5}{12}-\frac {1}{6}=$ $\frac {3}{4}-\frac {2}{7}=$ $\frac {11}{12}-\frac {3}{4}=$
$\frac {15}{8}-\frac {5}{4}=$ $\frac {3}{5}+\frac {1}{4}=$ $\frac {10}{9}-\frac {1}{8}=$ $\frac {7}{12}+\frac {3}{4}=$
$\frac {10}{11}-\frac {2}{3}=$ $\frac {1}{12}+\frac {11}{12}=$ $\frac {24}{25}-\frac {3}{10}=$ $\frac {2}{3}-\frac {3}{7}=$
$\frac {15}{16}+\frac {3}{8}=$ $\frac {5}{2}-\frac {1}{3}=$ $2+\frac {2}{5}=$ $\frac {7}{8}-\frac {1}{8}=$
$\frac {4}{3}-\frac {4}{9}=$ $\frac {3}{4}-\frac {5}{14}=$ $\frac {2}{5}+\frac {3}{8}=$ $\frac {2}{5}+\frac {4}{9}=$

答案： $\frac {1}{2}$ $\frac {4}{9}$ $\frac {9}{14}$ $\frac {3}{7}$ $\frac {8}{9}$ $\frac {1}{4}$ $\frac {13}{28}$ $\frac {1}{6}$ $\frac {5}{8}$ $\frac {17}{20}$ $\frac {71}{72}$ $\frac {4}{3}$ $\frac {8}{33}$ 1 $\frac {33}{50}$ $\frac {5}{21}$ $\frac {21}{16}$ $\frac {13}{6}$ $2\frac {2}{5}$ $\frac {3}{4}$ $\frac {8}{9}$ $\frac {11}{28}$ $\frac {31}{40}$ $\frac {38}{45}$

2. 计算下面各题，怎样简便就怎样算。
$9-\frac {1}{10}-\frac {9}{10}$ $\frac {13}{16}-\frac {1}{8}-\frac {3}{16}$ $\frac {5}{16}-\frac {14}{19}+\frac {11}{16}-\frac {5}{19}$
$\frac {7}{8}-(\frac {2}{9}+\frac {1}{3})$ $\frac {1}{2}-(\frac {3}{4}-\frac {3}{8})$ $\frac {1}{3}+(\frac {3}{8}-\frac {1}{4})$

答案： 8 $\frac {1}{2}$ 0 $\frac {23}{72}$ $\frac {1}{8}$ $\frac {11}{24}$