《2025年通城学典计算能手五年级数学下册青岛版五四制》

一、口算。
60×31.4 = 0.9 + 1.4 = $\frac{2}{3}÷\frac{2}{3} =$
3.14×30² = 4.22×0.5 = $\frac{8}{15} - \frac{5}{16} =$
3.14×0.05 = 0.95 + 2.66 = $\frac{2}{3}÷\frac{4}{9} =$
3.14×20 = 4 - 0.52 = $\frac{3}{4}×\frac{3}{8} =$
3.14×100 = 2.05×100 = 24÷$\frac{3}{4} =$
3.14×4 = 5230 + 350 = $\frac{1}{2} - \frac{1}{6} =$
3.14×0.9 = 0.17 + 0.33 = $\frac{4}{27}×\frac{9}{16} =$
3.14×1² = 0.081×10 = $\frac{3}{4}÷24 =$
3.14×50 = 3.9÷0.13 = $\frac{6}{7}×\frac{5}{12} =$
40×3.14 = $\frac{3}{4} + \frac{1}{2} =$ 60×$\frac{7}{15} =$

答案： 1884@@2.3@@1@@2826@@2.11@@$\frac{53}{240}$@@0.157@@3.61@@$\frac{3}{2}$@@62.8@@3.48@@$\frac{9}{32}$@@314@@205@@32@@12.56@@5580@@$\frac{1}{3}$@@2.826@@0.5@@$\frac{1}{12}$@@3.14@@0.81@@$\frac{1}{32}$@@157@@30@@$\frac{5}{14}$@@125.6@@$\frac{5}{4}$@@28

二、计算下面各题，怎样简便就怎样计算。
$\frac{5}{7}×16.31 - 2.31÷\frac{7}{5}$            $\frac{7}{4}×\frac{5}{8} + \frac{1}{4}÷\frac{8}{5}$               $(\frac{3}{8} - \frac{3}{8}÷\frac{8}{3})×\frac{16}{9}$

答案： 10@@$\frac{5}{4}$@@$\frac{5}{12}$