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第70頁

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C
C
C
?$\frac {3}{8}，\frac {3}{7}，\frac {6}{11}，\frac {3}{4}$?
?$\frac {5}{9}$?
?$\frac {1}{6}，\frac {1}{5}，\frac {4}{13}$?
?$2\frac 18$?
?$1\frac 45$?
4
?$5\frac 79$?
?$4\frac 7{20}$?
0.375
0.71
0.8
1.17
?$\frac {5}{8}$?
?$\frac {3}{2}$?
?$\frac {7}{20}$?
?$5\frac 6{25}$?
?$\frac {2}{3}$?
?$\frac {4}{5}$?
?$\frac {1}{3}$?
?$\frac {3}{4}$?
?$\begin {aligned}&\frac {2}{3}=\frac {10}{15}，\frac {3}{5}=\frac {9}{15}\\&\frac {10}{15}>\frac {9}{15}，\frac {2}{3}>\frac {3}{5}\end {aligned}$?
?$\begin {aligned}&\frac {7}{12}=\frac {21}{36}，\frac {5}{9}=\frac {20}{36}\\&\frac {21}{36}>\frac {20}{36}，\frac {7}{12}>\frac {5}{9}\end {aligned}$?
?$\begin {aligned}&\frac {7}{18}=\frac {14}{36}，\frac {5}{12}=\frac {15}{36}\\&\frac {14}{36}<\frac {15}{36}，\frac {7}{18}<\frac {5}{12}\end {aligned}$?
?$\frac {2}{5}$? < ?$\frac {5}{8}$? < ?$\frac {3}{4}$?
?$\frac {3}{4}$? < ?$\frac {4}{5}$? < ?$\frac {6}{7}$?


15÷60=?$\frac {1}{4}$?
答：鵝的只數(shù)占雞的?$\frac {1}{4}。$?
(20+15)÷(60+20+15)=?$\frac {7}{19}$?
答：一共占家禽總數(shù)的?$\frac {7}{19}。$?
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