《2025年同步口算练习册六年级数学上册人教版》

1. 直接写得数。
$1-\frac {8}{15}=$
$\frac {5}{18}×\frac {1}{6}=$
$\frac {9}{14}×14=$
$\frac {9}{10}×\frac {5}{54}=$
$\frac {7}{10}×\frac {8}{35}=$
$\frac {3}{4}×\frac {1}{2}=$
$\frac {5}{7}×\frac {2}{9}=$
$\frac {4}{27}×9=$
$\frac {3}{2}×\frac {1}{39}=$
$16×\frac {3}{8}=$
$\frac {4}{3}×\frac {3}{4}=$
$\frac {1}{20}×\frac {4}{5}=$
$\frac {5}{2}×\frac {4}{35}=$
$\frac {2}{7}+\frac {1}{4}=$
$\frac {5}{3}×\frac {9}{7}=$
$\frac {6}{7}×\frac {5}{42}=$

答案： $\frac{7}{15}$，$\frac{5}{108}$，9，$\frac{1}{12}$，$\frac{4}{25}$，$\frac{3}{8}$，$\frac{10}{63}$，$\frac{4}{3}$，$\frac{1}{26}$，6，1，$\frac{1}{25}$，$\frac{2}{7}$，$\frac{15}{28}$，$\frac{15}{7}$，$\frac{5}{49}$

2. 连一连。
$14×\frac {5}{28}$，$\frac {7}{5}×\frac {1}{14}$，$\frac {2}{5}×\frac {5}{8}$，$\frac {25}{4}×\frac {2}{5}$，$\frac {1}{6}×\frac {3}{5}$，$\frac {2}{9}×\frac {9}{8}$，$\frac{1}{4}$，$\frac{1}{10}$，$\frac{5}{2}$

答案： $14×\frac{5}{28}=\frac{5}{2}$，$\frac{7}{5}×\frac{1}{14}=\frac{1}{10}$，$\frac{2}{5}×\frac{5}{8}=\frac{1}{4}$，$\frac{25}{4}×\frac{2}{5}=\frac{5}{2}$，$\frac{1}{6}×\frac{3}{5}=\frac{1}{10}$，$\frac{2}{9}×\frac{9}{8}=\frac{1}{4}$，连线结果为$14×\frac{5}{28}$连$\frac{5}{2}$，$\frac{7}{5}×\frac{1}{14}$连$\frac{1}{10}$，$\frac{2}{5}×\frac{5}{8}$连$\frac{1}{4}$，$\frac{25}{4}×\frac{2}{5}$连$\frac{5}{2}$，$\frac{1}{6}×\frac{3}{5}$连$\frac{1}{10}$，$\frac{2}{9}×\frac{9}{8}$连$\frac{1}{4}$

3. 在〇里填上“＞”“＜”或“=”。
$\frac {2}{7}×\frac {7}{4}$〇1
5〇$\frac {3}{5}×\frac {15}{3}$
$\frac {1}{6}×\frac {1}{3}$〇$\frac {1}{3}$
$\frac {1}{5}×\frac {1}{2}$〇$\frac {1}{5}+\frac {1}{5}$
$\frac {2}{3}+\frac {2}{3}$〇$\frac {2}{3}×2$
$\frac {9}{7}×1$〇$0×\frac {9}{7}$

答案： ＜，＞，＜，＜，=，＞

用$\frac{3}{5}m$的铁丝围成一个正方形，这个正方形的边长是（ ）m。

答案： $\frac{3}{20}$
解析：正方形边长为$\frac{3}{5}÷4=\frac{3}{20}$m。