《2025年王朝霞口算小达人六年级数学上册人教版》

1 直接写出得数。
$6÷\frac {3}{5}= $ $\frac {3}{8}×24= $ $2.7×\frac {4}{9}= $ $\frac {4}{5}÷\frac {7}{9}= $
$5÷\frac {1}{8}= $ $\frac {1}{6}×3= $ $0.8÷\frac {8}{13}= $ $6÷\frac {1}{6}= $
$\frac {2}{9}×\frac {5}{6}= $ $\frac {2}{7}÷\frac {1}{7}= $ $\frac {7}{8}×\frac {4}{3}= $ $\frac {4}{5}÷\frac {4}{5}= $
$\frac {3}{4}÷\frac {9}{8}= $ $\frac {3}{5}×\frac {2}{3}= $ $\frac {1}{4}÷\frac {11}{12}= $ $\frac {8}{15}×\frac {5}{9}= $
$\frac {4}{5}×0.25= $ $\frac {5}{18}÷\frac {10}{9}= $ $\frac {5}{6}×\frac {7}{10}= $ $\frac {18}{25}÷0.4= $

答案： 10 9 1.2 $\frac{36}{35}$
40 $\frac{1}{2}$ 1.3 36
$\frac{5}{27}$ 2 $\frac{7}{6}$ 1
$\frac{2}{3}$ $\frac{2}{5}$ $\frac{3}{11}$ $\frac{8}{27}$
0.2 $\frac{1}{4}$ $\frac{7}{12}$ $\frac{9}{5}$

2 求下列各比的比值。
$12:6= $ $35:15= $ $0.9:3= $
$\frac {1}{2}:0.5= $ $6.4:8= $ $0.04:0.2= $
$18:27= $ $\frac {24}{7}:3= $ $\frac {5}{8}:\frac {11}{4}= $
$\frac {5}{2}:\frac {9}{2}= $ $\frac {8}{27}:\frac {1}{9}= $ $\frac {1}{8}:0.25= $
$\frac {1}{3}:7= $ $0.2:\frac {2}{11}= $ $\frac {3}{40}:\frac {1}{10}= $

答案： 2 $\frac{7}{3}$ $\frac{3}{10}$
1 0.8 0.2
$\frac{2}{3}$ $\frac{8}{7}$ $\frac{5}{22}$
$\frac{5}{9}$ $\frac{8}{3}$ $\frac{1}{2}$
$\frac{1}{21}$ $\frac{11}{10}$ $\frac{3}{4}$

3 思维应用 下面各题算得对吗？对的画“√”,错的画“×”并改正。
(1)$\frac {7}{8}-\frac {7}{8}×\frac {3}{14}$
$=0×\frac {3}{14}$
$=0$ ( )
改正：
(2)$(1-\frac {7}{9})÷\frac {7}{8}$
$=1-\frac {8}{9}$
$=\frac {1}{9}$ ( )
改正：

答案：
(1)×
$\frac{7}{8}-\frac{7}{8}×\frac{3}{14}$
$=\frac{7}{8}-\frac{3}{16}$
$=\frac{11}{16}$
(2)×
$(1-\frac{7}{9})÷\frac{7}{8}$
$=\frac{2}{9}÷\frac{7}{8}$
$=\frac{16}{63}$