2025年暑假作业河南人民出版社五年级数学苏教版
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一、直接写得数。
$\frac {3}{5}+\frac {1}{6}=$
$\frac {1}{4}+\frac {2}{7}=$
$\frac {2}{8}-\frac {2}{9}=$
$\frac {3}{5}+\frac {1}{6}=$
$\frac {23}{30}$
$\frac {1}{3}-\frac {1}{5}=$$\frac {2}{15}$
$\frac {3}{4}+\frac {1}{9}=$$\frac {31}{36}$
$\frac {1}{4}+\frac {2}{7}=$
$\frac {15}{28}$
$\frac {7}{10}-\frac {1}{2}=$$\frac {1}{5}$
$\frac {3}{8}-\frac {1}{6}=$$\frac {5}{24}$
$\frac {2}{8}-\frac {2}{9}=$
$\frac {1}{36}$
$\frac {5}{6}-\frac {1}{4}=$$\frac {7}{12}$
$\frac {1}{2}+\frac {2}{7}=$$\frac {11}{14}$
答案:
$\frac {23}{30}$ $\frac {2}{15}$ $\frac {31}{36}$ $\frac {15}{28}$ $\frac {1}{5}$ $\frac {5}{24}$ $\frac {1}{36}$ $\frac {7}{12}$ $\frac {11}{14}$
二、比大小,在○内填上“>”“<”或“=”。
$\frac {1}{23}$○
$\frac {3}{4}+\frac {1}{6}$○
$\frac {1}{23}$○
>
$\frac {1}{26}$ $\frac {3}{11}$○>
$\frac {5}{24}$ $\frac {3}{4}$○>
$\frac {4}{7}$$\frac {3}{4}+\frac {1}{6}$○
>
$\frac {7}{8}$ $\frac {4}{5}-\frac {3}{7}$○<
$\frac {7}{10}$ $1-\frac {1}{2}-\frac {1}{3}$○=
$\frac {1}{6}$
答案:
> > > > < =
三、下面的计算对吗?对的打“√”,错的打“×”,并把错误的改正过来。
1.$\frac {3}{7}+\frac {1}{6}=\frac {3}{7}+\frac {3}{18}=\frac {3}{25}$(
2.$\frac {8}{9}-\frac {5}{12}=\frac {32}{36}-\frac {20}{36}=\frac {1}{3}$(
3.$\frac {7}{15}-\frac {2}{5}+\frac {2}{15}=\frac {7}{15}+\frac {2}{15}-\frac {2}{5}=\frac {9}{15}-\frac {2}{5}=\frac {3}{5}-\frac {2}{5}=\frac {1}{5}$(
1.$\frac {3}{7}+\frac {1}{6}=\frac {3}{7}+\frac {3}{18}=\frac {3}{25}$(
×
) 改正:$\frac {25}{42}$2.$\frac {8}{9}-\frac {5}{12}=\frac {32}{36}-\frac {20}{36}=\frac {1}{3}$(
×
) 改正:$\frac {17}{36}$3.$\frac {7}{15}-\frac {2}{5}+\frac {2}{15}=\frac {7}{15}+\frac {2}{15}-\frac {2}{5}=\frac {9}{15}-\frac {2}{5}=\frac {3}{5}-\frac {2}{5}=\frac {1}{5}$(
√
)
答案:
1.×$\frac {25}{42}$ 2.×$\frac {17}{36}$ 3.√
四、解下列方程。
$\frac {5}{6}-x=\frac {1}{4}$,$x=$
$x+\frac {5}{11}=\frac {14}{3}$,$x=$
$x-\frac {7}{8}=\frac {5}{16}$,$x=$
$\frac {5}{6}-x=\frac {1}{4}$,$x=$
$\frac {7}{12}$
$x+\frac {5}{11}=\frac {14}{3}$,$x=$
$\frac {139}{33}$
$x-\frac {7}{8}=\frac {5}{16}$,$x=$
$\frac {19}{16}$
答案:
$x=\frac {7}{12}$ $x=\frac {139}{33}$ $x=\frac {19}{16}$
五、在( )里填上适当的运算符号。
$\frac {7}{18}$(
$\frac {11}{12}$(
$\frac {7}{18}$(
-
)$\frac {1}{9}=\frac {5}{18}$ $\frac {2}{3}$(+
)$\frac {1}{4}=\frac {11}{12}$$\frac {11}{12}$(
+
)$\frac {5}{24}=\frac {27}{24}$ $\frac {5}{16}$(+
)$\frac {3}{4}=\frac {17}{16}$
答案:
【答案】:$-$;$+$;$+$;$+$
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