第25页 - 亮点给力提优课时作业本五年级数学江苏版

0.75

0.714

0.625

2.4

$\frac{13} {50}$

$\frac{18}{5}$

$\frac{1} {200}$

$\frac{71} {50}$

$\frac{2}{3}$

$\frac{7}{2}$

$\frac{4}{3}$

$\frac{3}{4}$

$4\frac{4}{5}$

$\frac{11}{21}$

4

$\frac{1}{3}$

$\frac{3} {4} = \frac{9} {12}， \frac{1} {6} = \frac{2} {12}\ $

$因为\frac{9}{12}＞ \frac{2}{12},$

$所以\frac{3}{4}＞\frac{1}{6} 。$

$\frac{14} {15}=\frac{28} {30}， \frac{9} {10}=\frac{27} {30}\ $

$因为\frac{28} {30} ＞ \frac{27} {30}，$

$所以\frac{14} {15} {＞} \frac{9} {10}。$

$\frac{5} {8} = \frac{30} {48}，\frac{7} {12} = \frac{28} {48}$

$\frac{9} {16} = \frac{27} {48}\ $

$因为\frac{30} {48} ＞ \frac{28} {48} ＞ \frac{27} {48},$

$所以\frac{5}{8}＞\frac{7}{12}＞\frac{9}{16}。$

$1 \frac{2} {9}$

$2 {\frac{1} {4}}$

$\frac{1}{2}$

$\frac{1}{5}$

$\frac{1}{7}$

9

5

20

30

48

1.2

＞

＜