《2025年计算高手六年级数学上册苏教版》

一、直接写出得数。
$\frac {4}{9}×\frac {3}{8}= $
$\frac {3}{4}×\frac {8}{9}= $
$\frac {7}{8}×\frac {16}{21}= $
$\frac {5}{6}×\frac {8}{15}= $
$\frac {25}{121}×\frac {11}{50}= $
$\frac {3}{4}×\frac {1}{2}= $
$\frac {4}{5}×\frac {5}{16}= $
$\frac {7}{12}×\frac {4}{7}= $
$\frac {5}{7}×\frac {2}{15}= $
$\frac {2}{15}×\frac {5}{6}= $
$\frac {3}{4}×\frac {1}{5}= $
$\frac {4}{9}×\frac {3}{2}= $
$\frac {17}{21}×\frac {9}{34}= $
$\frac {18}{25}×\frac {5}{16}= $
$\frac {17}{19}×\frac {38}{51}= $
$\frac {26}{63}×\frac {28}{39}= $
$\frac {2}{3}×\frac {11}{12}= $
$\frac {1}{2}×\frac {3}{8}= $
$\frac {1}{5}×\frac {5}{8}= $
$\frac {3}{4}×\frac {2}{9}= $
$\frac {7}{12}×\frac {4}{7}= $
$\frac {5}{9}×\frac {3}{10}= $
$\frac {8}{15}×\frac {5}{16}= $
$\frac {11}{18}×\frac {6}{11}= $

答案： $\frac{1}{6}$ $\frac{2}{3}$ $\frac{2}{3}$ $\frac{4}{9}$ $\frac{1}{22}$ $\frac{3}{8}$ $\frac{1}{4}$ $\frac{1}{3}$ $\frac{2}{21}$ $\frac{1}{9}$ $\frac{3}{20}$ $\frac{2}{3}$ $\frac{3}{14}$ $\frac{9}{40}$ $\frac{2}{3}$ $\frac{8}{27}$ $\frac{11}{18}$ $\frac{3}{16}$ $\frac{1}{8}$ $\frac{1}{6}$ $\frac{1}{3}$ $\frac{1}{6}$ $\frac{1}{6}$ $\frac{1}{3}$

二、看图列式计算。
1.

2.

答案： 1. $20×\frac{1}{4}=5$(个)
2. $20×\frac{4}{5}×\frac{2}{3}=\frac{32}{3}$(千克)

三、新考法 规律探究 先找规律,再填数。
(1)$\frac {8}{9},\frac {4}{9},\frac {2}{9}$, ( ),$\frac {1}{18}$, ( ), ( )。
(2)$\frac {4}{5},1$, ( ),$\frac {25}{16}$, ( ), ( )。

答案：
(1)$\frac{1}{9}$ $\frac{1}{36}$ $\frac{1}{72}$
(2)$\frac{5}{4}$ $\frac{125}{64}$ $\frac{625}{256}$