登录
一、口算。
$\frac{5}{9}-\frac{11}{20}=$
$\frac{7}{20}+\frac{3}{5}=$
$2400÷800=$
$32×25\%=$
$4.9+0.7=$
$\frac{2}{15}×\frac{3}{4}=$
$3.25-2.52=$
$\frac{4}{7}÷\frac{8}{9}=$
$\frac{1}{3}+\frac{6}{5}=$
$\frac{1}{8}×\frac{4}{7}=$
$\frac{4}{5}-\frac{1}{4}=$
$42÷\frac{3}{7}=$
$0.3×0.4=$
$2-\frac{3}{23}=$
$\frac{1}{6}÷\frac{1}{3}=$
$\frac{7}{15}÷\frac{4}{5}=$
$\frac{3}{16}+\frac{1}{32}=$
$25×40=$
$\frac{15}{16}÷\frac{3}{4}=$
$50×\frac{3}{5}=$
$2+\frac{4}{9}=$
$\frac{5}{9}-\frac{11}{20}=$
$\frac{1}{180}$
$\frac{7}{20}+\frac{3}{5}=$
$\frac{19}{20}$
$2400÷800=$
3
$32×25\%=$
8
$4.9+0.7=$
5.6
$\frac{2}{15}×\frac{3}{4}=$
$\frac{1}{10}$
$3.25-2.52=$
0.73
$\frac{4}{7}÷\frac{8}{9}=$
$\frac{9}{14}$
$\frac{1}{3}+\frac{6}{5}=$
$\frac{23}{15}$
$\frac{1}{8}×\frac{4}{7}=$
$\frac{1}{14}$
$\frac{4}{5}-\frac{1}{4}=$
$\frac{11}{20}$
$42÷\frac{3}{7}=$
98
$0.3×0.4=$
0.12
$2-\frac{3}{23}=$
$\frac{43}{23}$
$\frac{1}{6}÷\frac{1}{3}=$
$\frac{1}{2}$
$\frac{7}{15}÷\frac{4}{5}=$
$\frac{7}{12}$
$\frac{3}{16}+\frac{1}{32}=$
$\frac{7}{32}$
$25×40=$
1000
$\frac{15}{16}÷\frac{3}{4}=$
$\frac{5}{4}$
$50×\frac{3}{5}=$
30
$2+\frac{4}{9}=$
$2\frac{4}{9}$
答案
一、$\frac{1}{180}$ $\frac{19}{20}$ 3
8 5.6 $\frac{1}{10}$
0.73 $\frac{9}{14}$ $\frac{23}{15}$
$\frac{1}{14}$ $\frac{11}{20}$ 98
0.12 $\frac{43}{23}$ $\frac{1}{2}$
$\frac{7}{12}$ $\frac{7}{32}$ 1000
$\frac{5}{4}$ 30 $2\frac{4}{9}$
8 5.6 $\frac{1}{10}$
0.73 $\frac{9}{14}$ $\frac{23}{15}$
$\frac{1}{14}$ $\frac{11}{20}$ 98
0.12 $\frac{43}{23}$ $\frac{1}{2}$
$\frac{7}{12}$ $\frac{7}{32}$ 1000
$\frac{5}{4}$ 30 $2\frac{4}{9}$
二、用竖式计算。
答案
二、239 7.98 16443
71.7 65 21.9
71.7 65 21.9
