一、直接写出得数。
$1-\frac{2}{5}=$
$1-\frac{2}{11}=$
$1-\frac{8}{14}=$
$1-\frac{5}{7}=$
$1-\frac{2}{22}=$
$1-\frac{2}{4}=$
$1-\frac{4}{6}=$
$1-\frac{7}{13}=$
$1-\frac{3}{10}=$
$1-\frac{7}{10}=$
$1-\frac{4}{12}=$
$1-\frac{1}{9}=$
$1-\frac{1}{2}=$
$1-\frac{2}{3}=$
$1-\frac{2}{7}=$
$1-\frac{13}{14}=$
$1-\frac{3}{4}=$
$1-\frac{4}{5}=$
$1-\frac{3}{8}=$
$1-\frac{3}{5}=$
$1-\frac{4}{9}=$
$1-\frac{1}{6}=$
$1-\frac{5}{12}=$
$1-\frac{5}{18}=$
$1-\frac{2}{5}=$
$1-\frac{2}{11}=$
$1-\frac{8}{14}=$
$1-\frac{5}{7}=$
$1-\frac{2}{22}=$
$1-\frac{2}{4}=$
$1-\frac{4}{6}=$
$1-\frac{7}{13}=$
$1-\frac{3}{10}=$
$1-\frac{7}{10}=$
$1-\frac{4}{12}=$
$1-\frac{1}{9}=$
$1-\frac{1}{2}=$
$1-\frac{2}{3}=$
$1-\frac{2}{7}=$
$1-\frac{13}{14}=$
$1-\frac{3}{4}=$
$1-\frac{4}{5}=$
$1-\frac{3}{8}=$
$1-\frac{3}{5}=$
$1-\frac{4}{9}=$
$1-\frac{1}{6}=$
$1-\frac{5}{12}=$
$1-\frac{5}{18}=$
答案
1.$\frac{3}{5}$
2.$\frac{9}{11}$
3.$\frac{6}{14}$
4.$\frac{2}{7}$
5.$\frac{20}{22}$
6.$\frac{2}{4}$
7.$\frac{2}{6}$
8.$\frac{6}{13}$
9.$\frac{7}{10}$
10.$\frac{3}{10}$
11.$\frac{8}{12}$
12.$\frac{8}{9}$
13.$\frac{1}{2}$
14.$\frac{1}{3}$
15.$\frac{5}{7}$
16.$\frac{1}{14}$
17.$\frac{1}{4}$
18.$\frac{1}{5}$
19.$\frac{5}{8}$
20.$\frac{2}{5}$
21.$\frac{5}{9}$
22.$\frac{5}{6}$
23.$\frac{7}{12}$
24.$\frac{13}{18}$
2.$\frac{9}{11}$
3.$\frac{6}{14}$
4.$\frac{2}{7}$
5.$\frac{20}{22}$
6.$\frac{2}{4}$
7.$\frac{2}{6}$
8.$\frac{6}{13}$
9.$\frac{7}{10}$
10.$\frac{3}{10}$
11.$\frac{8}{12}$
12.$\frac{8}{9}$
13.$\frac{1}{2}$
14.$\frac{1}{3}$
15.$\frac{5}{7}$
16.$\frac{1}{14}$
17.$\frac{1}{4}$
18.$\frac{1}{5}$
19.$\frac{5}{8}$
20.$\frac{2}{5}$
21.$\frac{5}{9}$
22.$\frac{5}{6}$
23.$\frac{7}{12}$
24.$\frac{13}{18}$
二、在○里填上“>”“<”或“=”。
$\frac{5}{6} ◯ 1 - \frac{1}{6}$
$\frac{3}{8} + \frac{2}{8} ◯ \frac{4}{8}$
$1 - \frac{2}{7} ◯ 1 - \frac{3}{7}$
$\frac{7}{9} ◯ \frac{3}{9} + \frac{3}{9}$
$\frac{6}{7} ◯ 1 - \frac{1}{7}$
$\frac{2}{5} + \frac{2}{5} ◯ 1$
$1 - \frac{7}{10} ◯ \frac{2}{10}$
$\frac{5}{8} + \frac{1}{8} ◯ \frac{3}{8} + \frac{2}{8}$
$\frac{5}{6} ◯ 1 - \frac{1}{6}$
$\frac{3}{8} + \frac{2}{8} ◯ \frac{4}{8}$
$1 - \frac{2}{7} ◯ 1 - \frac{3}{7}$
$\frac{7}{9} ◯ \frac{3}{9} + \frac{3}{9}$
$\frac{6}{7} ◯ 1 - \frac{1}{7}$
$\frac{2}{5} + \frac{2}{5} ◯ 1$
$1 - \frac{7}{10} ◯ \frac{2}{10}$
$\frac{5}{8} + \frac{1}{8} ◯ \frac{3}{8} + \frac{2}{8}$
答案
1.=
2.>
3.>
4.>
5.=
6.<
7.>
8.>
2.>
3.>
4.>
5.=
6.<
7.>
8.>
三、星期天,爸爸买了一个蛋糕给芳芳过生日,爸爸说:“我吃了这个蛋糕的$\frac{3}{8}$。”妈妈说:“我吃了这个蛋糕的$\frac{2}{8}$。”芳芳说:“我吃的和妈妈同样多。”他们三人一共吃了这个蛋糕的$\frac{(\quad)}{(\quad)}$,还剩下这个蛋糕的$\frac{(\quad)}{(\quad)}$。
1. 2. 3. 4.
5. 6. 7. 8.
1. 2. 3. 4.
5. 6. 7. 8.
答案
1.$\frac{7}{8}$
2.$\frac{1}{8}$
2.$\frac{1}{8}$
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