1. 在虚线框中画图,表示下列各分数。

答案
2. 把下面的假分数化成带分数或整数。
$\frac{13}{9}=$ $\frac{80}{20}=$ $\frac{53}{15}=$ $\frac{35}{7}=$ $\frac{80}{6}=$ $\frac{71}{11}=$
$\frac{13}{9}=$ $\frac{80}{20}=$ $\frac{53}{15}=$ $\frac{35}{7}=$ $\frac{80}{6}=$ $\frac{71}{11}=$
答案
$1\frac 49$
4
$3\frac 8{15}$
5
$13\frac 26$
$6\frac 5{11}$
4
$3\frac 8{15}$
5
$13\frac 26$
$6\frac 5{11}$
3. 填一填。
$4÷7=\frac{(\_\_\_\_\_\_)}{(\_\_\_\_\_\_)}$ $7÷4=\frac{(\_\_\_\_\_\_)}{(\_\_\_\_\_\_)}=1\frac{(\_\_\_\_\_\_)}{(\_\_\_\_\_\_)}$ $1=(\_\_\_\_\_\_)÷(\_\_\_\_\_\_)=\frac{7}{(\_\_\_\_\_\_)}$
$3\frac{7}{9}=\frac{(\_\_\_\_\_\_)}{(\_\_\_\_\_\_)}=(\_\_\_\_\_\_)÷(\_\_\_\_\_\_)$ $\frac{(\_\_\_\_\_\_)}{(\_\_\_\_\_\_)}=133÷12=(\_\_\_\_\_\_)\frac{(\_\_\_\_\_\_)}{(\_\_\_\_\_\_)}$
$4÷7=\frac{(\_\_\_\_\_\_)}{(\_\_\_\_\_\_)}$ $7÷4=\frac{(\_\_\_\_\_\_)}{(\_\_\_\_\_\_)}=1\frac{(\_\_\_\_\_\_)}{(\_\_\_\_\_\_)}$ $1=(\_\_\_\_\_\_)÷(\_\_\_\_\_\_)=\frac{7}{(\_\_\_\_\_\_)}$
$3\frac{7}{9}=\frac{(\_\_\_\_\_\_)}{(\_\_\_\_\_\_)}=(\_\_\_\_\_\_)÷(\_\_\_\_\_\_)$ $\frac{(\_\_\_\_\_\_)}{(\_\_\_\_\_\_)}=133÷12=(\_\_\_\_\_\_)\frac{(\_\_\_\_\_\_)}{(\_\_\_\_\_\_)}$
答案
$\frac47$ $\frac74$ $\frac34$ 7 7 7
$\frac{34}9$ 34 9 $\frac{133}{12}$ 11$\frac1{12}$
$\frac{34}9$ 34 9 $\frac{133}{12}$ 11$\frac1{12}$
4. 在括号里填上合适的带分数。
$19\mathrm{cm}=(\_\_\_\_\_\_)\mathrm{dm}$ $313\mathrm{dm}^2=(\_\_\_\_\_\_)\mathrm{m}^2$ $8300\mathrm{cm}^3=(\_\_\_\_\_\_)\mathrm{dm}^3$
$13$个月$=(\_\_\_\_\_\_)$年 $32$时$=(\_\_\_\_\_\_)$日 $2300\mathrm{g}=(\_\_\_\_\_\_)\mathrm{kg}$
$19\mathrm{cm}=(\_\_\_\_\_\_)\mathrm{dm}$ $313\mathrm{dm}^2=(\_\_\_\_\_\_)\mathrm{m}^2$ $8300\mathrm{cm}^3=(\_\_\_\_\_\_)\mathrm{dm}^3$
$13$个月$=(\_\_\_\_\_\_)$年 $32$时$=(\_\_\_\_\_\_)$日 $2300\mathrm{g}=(\_\_\_\_\_\_)\mathrm{kg}$
答案
$1\frac 9{10}$
$3\frac {13}{100}$
$8\frac {300}{1000}$
$1\frac 1{12}$
$1\frac 8{24}$
$2\frac {300}{1000}$
$3\frac {13}{100}$
$8\frac {300}{1000}$
$1\frac 1{12}$
$1\frac 8{24}$
$2\frac {300}{1000}$
5. 在$◯$里填上“$>$”“$<$”或“$=$”。
$\frac{3}{5}◯2\frac{1}{4}$ $3◯\frac{24}{3}$ $\frac{29}{4}◯7$ $5\frac{5}{6}◯\frac{35}{6}$
$\frac{82}{9}◯9\frac{2}{9}$ $6\frac{5}{7}◯\frac{50}{7}$ $4\frac{2}{25}◯\frac{100}{25}$ $\frac{270}{30}◯9\frac{1}{30}$
$\frac{3}{5}◯2\frac{1}{4}$ $3◯\frac{24}{3}$ $\frac{29}{4}◯7$ $5\frac{5}{6}◯\frac{35}{6}$
$\frac{82}{9}◯9\frac{2}{9}$ $6\frac{5}{7}◯\frac{50}{7}$ $4\frac{2}{25}◯\frac{100}{25}$ $\frac{270}{30}◯9\frac{1}{30}$
答案
<
<
>
=
<
<
>
<
<
>
=
<
<
>
<
6. 电器商场今天卖出$22$台空调和$27$台电视机。
(1)卖出空调的台数是电视机的几分之几?
(2)卖出电视机的台数是空调的几倍?
(1)卖出空调的台数是电视机的几分之几?
(2)卖出电视机的台数是空调的几倍?
答案
$22÷27=\frac {22}{27}$
答:卖出空调的台数是电视机的$\frac {22}{27}$。
$27÷22=\frac {27}{22}$
答:卖出电视机的台数是空调的$ \frac {27}{22}$倍。
答:卖出空调的台数是电视机的$\frac {22}{27}$。
$27÷22=\frac {27}{22}$
答:卖出电视机的台数是空调的$ \frac {27}{22}$倍。
登录