登录
一、口算。
$\frac{3}{4}-\frac{3}{8}=$
$5.3+0.37=$
$45\%÷3=$
$\frac{2}{7}÷\frac{9}{14}=$
$3.3-1.07=$
$\frac{7}{10}+\frac{1}{2}=$
$1÷0.125=$
$\frac{3}{4}-\frac{3}{8}=$
$\frac{3}{8}$
$\frac{8}{9}+\frac{2}{3}=$$\frac{14}{9}$
$8×62.5\%=$5
$5.3+0.37=$
5.67
$4.8×0.4=$1.92
$12.5÷0.25=$50
$45\%÷3=$
0.15
$0.2+53\%=$0.73
$\frac{21}{5}×\frac{35}{6}=$$\frac{49}{2}$
$\frac{2}{7}÷\frac{9}{14}=$
$\frac{4}{9}$
$20×2.5=$50
$\frac{7}{8}-\frac{5}{6}=$$\frac{1}{24}$
$3.3-1.07=$
2.23
$\frac{10}{11}÷\frac{5}{6}=$$\frac{12}{11}$
$\frac{5}{6}+\frac{1}{8}=$$\frac{23}{24}$
$\frac{7}{10}+\frac{1}{2}=$
$\frac{6}{5}$
$75\%×24=$18
$0.49÷70=$0.007
$1÷0.125=$
8
$320\%-15\%=$305%
$\frac{2}{3}-\frac{1}{7}=$$\frac{11}{21}$
答案
一、$\frac{3}{8}$ $\frac{14}{9}$ 5
5.67 1.92 50
0.15 0.73 $\frac{49}{2}$
$\frac{4}{9}$ 50 $\frac{1}{24}$
2.23 $\frac{12}{11}$ $\frac{23}{24}$
$\frac{6}{5}$ 18 0.007
8 305% $\frac{11}{21}$
5.67 1.92 50
0.15 0.73 $\frac{49}{2}$
$\frac{4}{9}$ 50 $\frac{1}{24}$
2.23 $\frac{12}{11}$ $\frac{23}{24}$
$\frac{6}{5}$ 18 0.007
8 305% $\frac{11}{21}$
二、解方程。
$2.6x-0.9x=5×17$ $\frac{1}{10}+\frac{9}{10}x+\frac{1}{5}x=\frac{1}{2}$ $80\%x-32\%x=57.6$
$\frac{5}{9}+\frac{1}{2}x=\frac{2}{3}÷\frac{6}{7}$ $x×\frac{9}{26}×\frac{2}{3}=\frac{9}{13}$ $\frac{3}{2}x-3.5×0.3=1.2$
$2.6x-0.9x=5×17$ $\frac{1}{10}+\frac{9}{10}x+\frac{1}{5}x=\frac{1}{2}$ $80\%x-32\%x=57.6$
$\frac{5}{9}+\frac{1}{2}x=\frac{2}{3}÷\frac{6}{7}$ $x×\frac{9}{26}×\frac{2}{3}=\frac{9}{13}$ $\frac{3}{2}x-3.5×0.3=1.2$
答案
二、$x = 50$ $x = \frac{4}{11}$ $x = 120$
$x = \frac{4}{9}$ $x = 3$ $x = 1.5$
$x = \frac{4}{9}$ $x = 3$ $x = 1.5$
