《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。
3.14×100 = 2.8 - 1.96 = $\frac{5}{9}÷\frac{5}{6} =$
3.14×0.1² = 0.2 + 0.82 = $\frac{5}{2}×\frac{2}{5} =$
314×0.3² = 2.7 - 0.27 = $\frac{5}{6}÷\frac{11}{12} =$
3.14×0.4 = 250÷0.01 = $\frac{9}{16}÷\frac{3}{4} =$
3.14×40 = 7.68 + 2.32 = $\frac{1}{3} + \frac{2}{7} =$
3.14×5 = 0.75 + 0.65 = 84÷7 =
1.256÷3.14 = 2.27 + 7.73 = 2 - $\frac{6}{7} =$
2512÷3.14 = $\frac{3}{5}×\frac{7}{12} =$ $\frac{9}{5}÷\frac{3}{5} =$
3.14×3 = $\frac{4}{7}×\frac{3}{2} =$ $\frac{1}{9} + \frac{1}{6} =$
0.314×100 = $\frac{5}{8} - \frac{5}{12} =$ $\frac{7}{12}×4.8 =$

答案： 314@@0.84@@$\frac{2}{3}$@@0.0314@@1.02@@1@@28.26@@2.43@@$\frac{10}{11}$@@1.256@@25000@@$\frac{3}{4}$@@125.6@@10@@$\frac{13}{21}$@@15.7@@1.4@@12@@0.4@@10@@$1\frac{1}{7}$@@800@@$\frac{7}{20}$@@3@@9.42@@$\frac{6}{7}$@@$\frac{5}{18}$@@31.4@@$\frac{5}{24}$@@2.8

二、计算下面各题，怎样简便就怎样计算。
24.2 - 5.02 - 4.98 $\frac{5}{17}×10 - 9÷\frac{17}{5}$ 48×($\frac{3}{4} - \frac{1}{3} + \frac{5}{6}$)

答案： 14.2@@$\frac{5}{17}$@@60