《2025年阳光同学暑假口算五升六数学》

1. 直接写出得数。
$\frac {7}{18}+\frac {1}{4}= $ $\frac {2}{3}-\frac {4}{15}= $ $\frac {5}{6}+\frac {3}{5}= $ $1-\frac {1}{6}-\frac {1}{3}= $
$\frac {5}{7}-\frac {2}{7}= $ $\frac {5}{11}+\frac {21}{22}= $ $\frac {3}{5}-\frac {3}{8}= $ $\frac {12}{7}-(\frac {5}{7}+\frac {1}{2})= $
$\frac {1}{2}+\frac {1}{16}= $ $\frac {2}{3}-\frac {2}{5}= $ $\frac {8}{9}-\frac {7}{27}= $ $\frac {4}{5}-\frac {2}{5}+\frac {3}{5}= $
$\frac {1}{6}+\frac {1}{3}= $ $1-\frac {7}{12}= $ $\frac {9}{10}-\frac {5}{6}= $ $7-(\frac {5}{9}-\frac {4}{9})= $
$\frac {4}{3}+\frac {3}{4}= $ $\frac {3}{5}-\frac {1}{25}= $ $\frac {4}{7}+\frac {1}{2}= $ $\frac {4}{11}-\frac {2}{7}+\frac {11}{11}= $
$2+\frac {2}{7}= $ $\frac {2}{3}+\frac {1}{6}= $ $\frac {3}{4}-\frac {1}{9}= $ $\frac {2}{5}-\frac {3}{8}+\frac {8}{5}= $

答案： 1. $\frac{23}{36}$ $\frac{2}{5}$ $\frac{43}{30}$ $\frac{1}{2}$ $\frac{3}{7}$ $\frac{31}{22}$ $\frac{9}{40}$ $\frac{1}{2}$ $\frac{9}{16}$ $\frac{4}{15}$ $\frac{17}{27}$ $1$ $\frac{1}{2}$ $\frac{5}{12}$ $\frac{1}{15}$ $6\frac{8}{9}$ $\frac{25}{12}$ $\frac{14}{25}$ $\frac{15}{14}$ $\frac{5}{7}$ $2\frac{2}{7}$ $\frac{5}{6}$ $\frac{23}{36}$ $1\frac{5}{8}$

2. 计算下面各题,怎样简便就怎样算。
$1-(\frac {3}{4}-\frac {2}{3})$ $\frac {7}{18}+(\frac {1}{3}-\frac {2}{9})$ $\frac {12}{7}-\frac {3}{4}-\frac {1}{4}+\frac {2}{7}$
$\frac {11}{12}-(\frac {2}{9}+\frac {1}{3})$ $\frac {5}{13}-(\frac {5}{13}-\frac {1}{3})$ $\frac {17}{10}-\frac {5}{9}-\frac {4}{9}+\frac {3}{10}$

答案： 2. $\frac{11}{12}$ $\frac{1}{2}$ $1$ $\frac{13}{36}$ $\frac{1}{3}$ $1$