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1. $\frac{5}{12}\xrightarrow{÷\frac{2}{3}}$（
$\frac{5}{8}$
）$\xrightarrow{÷\frac{3}{4}}$（$\frac{5}{6}$
）$\xrightarrow{÷\frac{2}{3}}$（$\frac{5}{4}$
）答案
2. 已知$\frac{3}{5}÷▲=\frac{3}{5}×▲$，则▲所代表的数是(
1
)。答案
1
3. 在$◯$里填上“$＞$”“$＜$”或“$=$”。
$6×\frac{5}{12}◯6$ $\frac{1}{5}×\frac{1}{4}◯\frac{1}{5}$ $6÷\frac{5}{12}◯6$ $\frac{1}{5}÷\frac{1}{4}◯\frac{1}{5}$
$\frac{5}{9}×\frac{3}{2}◯\frac{5}{9}$ $\frac{5}{6}×\frac{6}{5}◯\frac{5}{6}$ $\frac{5}{9}÷\frac{3}{2}◯\frac{5}{9}$ $\frac{5}{6}÷\frac{6}{5}◯\frac{5}{6}$
$6×\frac{5}{12}◯6$ $\frac{1}{5}×\frac{1}{4}◯\frac{1}{5}$ $6÷\frac{5}{12}◯6$ $\frac{1}{5}÷\frac{1}{4}◯\frac{1}{5}$
$\frac{5}{9}×\frac{3}{2}◯\frac{5}{9}$ $\frac{5}{6}×\frac{6}{5}◯\frac{5}{6}$ $\frac{5}{9}÷\frac{3}{2}◯\frac{5}{9}$ $\frac{5}{6}÷\frac{6}{5}◯\frac{5}{6}$
答案
<
＜
>
>
>
>
<
＜
＜
>
>
>
>
<
＜
1. $28$除以$\frac{14}{15}$的商(
A.大于
B.小于
C.等于
A
)$28$乘$\frac{14}{15}$的积。A.大于
B.小于
C.等于
答案
A
2. 已知小红的卡片数量除以$\frac{4}{5}$与小明的卡片数量相等，则小红的卡片数(
A.多于
B.少于
C.等于
B
)小明的卡片数。A.多于
B.少于
C.等于
答案
B
三、我会解方程。
$x÷\frac{5}{6}=\frac{2}{5}$ $\frac{2}{3}x=\frac{4}{15}$ $x+\frac{2}{3}x=\frac{15}{4}$
$1\frac{1}{3}x-\frac{1}{2}x=5$ $7x÷\frac{1}{10}=\frac{3}{5}$ $(\frac{2}{3}-\frac{1}{2})x=\frac{1}{3}$
$x÷\frac{5}{6}=\frac{2}{5}$ $\frac{2}{3}x=\frac{4}{15}$ $x+\frac{2}{3}x=\frac{15}{4}$
$1\frac{1}{3}x-\frac{1}{2}x=5$ $7x÷\frac{1}{10}=\frac{3}{5}$ $(\frac{2}{3}-\frac{1}{2})x=\frac{1}{3}$
答案
解$:x=\frac {2}{5}×\frac {5}{6}$
$\ \ x=\frac {1}{3}$
解$:x=\frac {4}{15}×\frac {3}{2}$
$ x=\frac{2}{5}$
解$:\frac {5}{3}x=\frac {15}{4}$
$ x=\frac{9}{4}$
解$:\frac {5}{6}x=5$
x=6
解$:70x=\frac {3}{5}$
$x=\frac{3}{350}$
解$:\frac {1}{6}x=\frac {1}{3}$
x=2
$\ \ x=\frac {1}{3}$
解$:x=\frac {4}{15}×\frac {3}{2}$
$ x=\frac{2}{5}$
解$:\frac {5}{3}x=\frac {15}{4}$
$ x=\frac{9}{4}$
解$:\frac {5}{6}x=5$
x=6
解$:70x=\frac {3}{5}$
$x=\frac{3}{350}$
解$:\frac {1}{6}x=\frac {1}{3}$
x=2
四、我会算。
$\frac{1}{2}÷\frac{8}{9}÷\frac{3}{4}$ $\frac{5}{6}÷\frac{25}{36}×\frac{1}{6}$ $\frac{8}{15}÷(\frac{8}{9}+\frac{2}{3})$
$\frac{2}{15}÷\frac{2}{5}+\frac{1}{4}$ $\frac{4}{9}÷\frac{8}{3}+\frac{3}{8}÷\frac{9}{5}$ $\frac{3}{5}×\frac{1}{8}+\frac{2}{5}÷8$
$\frac{1}{2}÷\frac{8}{9}÷\frac{3}{4}$ $\frac{5}{6}÷\frac{25}{36}×\frac{1}{6}$ $\frac{8}{15}÷(\frac{8}{9}+\frac{2}{3})$
$\frac{2}{15}÷\frac{2}{5}+\frac{1}{4}$ $\frac{4}{9}÷\frac{8}{3}+\frac{3}{8}÷\frac{9}{5}$ $\frac{3}{5}×\frac{1}{8}+\frac{2}{5}÷8$
答案
$=\frac {1}{2}×\frac {9}{8}×\frac {4}{3}$
$= \frac{3}{4}$
$=\frac {5}{6}×\frac {36}{25}×\frac {1}{6}$
$= \frac{1}{5}$
$=\frac {8}{15}×\frac {9}{14}$
$= \frac{12}{35}$
解$:\frac {1}{6}x=\frac {1}{3}$
x=2
$=\frac {1}{3}+\frac {1}{4}$
$ =\frac{7}{12}$
$=\frac {4}{9}×\frac {3}{8}+\frac {3}{8}×\frac {9}{5} $
$=\frac{101}{120}$
$=\frac {1}{8}×(\frac {3}{5}+\frac {2}{5}) $
$=\frac{1}{8}$
$= \frac{3}{4}$
$=\frac {5}{6}×\frac {36}{25}×\frac {1}{6}$
$= \frac{1}{5}$
$=\frac {8}{15}×\frac {9}{14}$
$= \frac{12}{35}$
解$:\frac {1}{6}x=\frac {1}{3}$
x=2
$=\frac {1}{3}+\frac {1}{4}$
$ =\frac{7}{12}$
$=\frac {4}{9}×\frac {3}{8}+\frac {3}{8}×\frac {9}{5} $
$=\frac{101}{120}$
$=\frac {1}{8}×(\frac {3}{5}+\frac {2}{5}) $
$=\frac{1}{8}$
