《2025年阳光同学计算小达人六年级数学下册人教版》

1. **口算**
$100\div28 =$
$13\%\div39\% =$
$\frac{4}{5}+\frac{1}{2}+\frac{6}{5}=$
$0.72\div1.6 =$
$70\%\div\frac{3}{4}=$
$\frac{3}{4}+\frac{5}{9}-\frac{1}{4}=$
$80\div2.5 =$
$12.5\div\frac{2}{3}=$
$3.2 + 2.1-1.7=$
$\frac{15}{16}\div50\% =$
$5\div\frac{9}{5}=$
$1.25\times32\times0.25=$
$0.56\div0.24 =$
$0.5\div\frac{1}{10000}=$
$12.56 - 1.2-1.8=$
$36\div14.4 =$
$3.2\div\frac{1}{8000}=$
$3.62 - 1.43-1.62=$
$\frac{5}{4}\div\frac{9}{10}=$
$0.96\div\frac{1}{600}=$
$8.6-\frac{1}{4}-\frac{3}{4}=$
$\frac{2}{3}\div\frac{8}{15}=$
$320000\times\frac{1}{400000}=$
$\frac{3}{17}\times16+\frac{3}{17}=$
$\frac{5}{12}\div\frac{12}{5}=$
$15000000\times\frac{1}{200000}=$
$85\%\times99 + 0.85=$

答案： $\frac{25}{7}$@@$\frac{1}{3}$@@$2\frac{1}{2}$@@$\frac{9}{20}$@@$\frac{14}{15}$@@$\frac{19}{18}$@@32@@$\frac{75}{4}$@@3.6@@$\frac{15}{8}$@@$\frac{25}{9}$@@10@@$\frac{7}{3}$@@5000@@9.56@@$\frac{5}{2}$@@25600@@0.57@@$\frac{25}{18}$@@576@@7.6@@$\frac{5}{4}$@@$\frac{4}{5}$@@3@@$\frac{25}{144}$@@75@@85

2. **化简比**
$128:16 =(\ \ \ \ \ ):(\ \ \ \ \ )$
$20\%:7\% =(\ \ \ \ \ ):(\ \ \ \ \ )$
$240:25 =(\ \ \ \ \ ):(\ \ \ \ \ )$
$\frac{4}{5}:25\% =(\ \ \ \ \ ):(\ \ \ \ \ )$
$170:51 =(\ \ \ \ \ ):(\ \ \ \ \ )$
$3\ m:5\ cm =(\ \ \ \ \ ):(\ \ \ \ \ )$
$1:\frac{4}{5}=(\ \ \ \ \ ):(\ \ \ \ \ )$
$9\ dm^{2}:10\ cm^{2}=(\ \ \ \ \ ):(\ \ \ \ \ )$
$\frac{6}{7}:\frac{25}{42}=(\ \ \ \ \ ):(\ \ \ \ \ )$
$7\ kg:0.2\ t =(\ \ \ \ \ ):(\ \ \ \ \ )$
$0.73:\frac{1}{10}=(\ \ \ \ \ ):(\ \ \ \ \ )$
$8000\ dm^{3}:0.8\ m^{3}=(\ \ \ \ \ ):(\ \ \ \ \ )$
$\frac{4}{5}:0.4 =(\ \ \ \ \ ):(\ \ \ \ \ )$
$5\ cm:10\ km =(\ \ \ \ \ ):(\ \ \ \ \ )$
$\frac{2}{3}:0.2 =(\ \ \ \ \ ):(\ \ \ \ \ )$
$7\ m:21\ km =(\ \ \ \ \ ):(\ \ \ \ \ )$

答案： 8@@1@@20@@7@@48@@5@@16@@5@@10@@3@@60@@1@@5@@4@@90@@1@@36@@25@@7@@200@@73@@10@@10@@1@@2@@1@@1@@200000@@10@@3@@1@@3000