《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。
430×20 = 2.5×0.4 = 3.2÷1.6 =
3.62×100 = 0.84 - 0.6 = 7200÷90 =
270 - 180 = 4.6 + 0.9 = 8.5×0.2 =
24×0.03 = 4.2÷0.14 = 3 - 0.08 =
4.5÷10 = 0.5 - 0.15 = 4÷24 =
$\frac{7}{4} - \frac{1}{2} =$ $\frac{1}{3}×\frac{15}{26} =$ $\frac{7}{15}×\frac{5}{21} =$
$\frac{7}{12} + \frac{3}{16} =$ $\frac{9}{5}÷\frac{81}{80} =$ $\frac{6}{7} + \frac{3}{14} =$
$10÷\frac{1}{15} =$ $\frac{3}{4} + \frac{3}{4} =$ $\frac{6}{5}÷\frac{9}{10} =$
$\frac{3}{8}×\frac{7}{12} =$ $\frac{5}{4} + \frac{4}{5} =$ $\frac{1}{8}÷\frac{1}{24} =$
$\frac{2}{5} - \frac{2}{9} =$ $\frac{1}{8}×\frac{1}{15} =$ $\frac{7}{8} - \frac{3}{4} =$

答案： 8600@@1@@2@@362@@0.24@@80@@90@@5.5@@1.7@@0.72@@30@@2.92@@0.45@@0.35@@$\frac{1}{6}$@@$\frac{5}{4}$@@$\frac{5}{26}$@@$\frac{1}{9}$@@$\frac{37}{48}$@@$\frac{16}{9}$@@$\frac{15}{14}$@@150@@$\frac{3}{2}$@@$\frac{4}{3}$@@$\frac{7}{32}$@@$\frac{41}{20}$@@3@@$\frac{8}{45}$@@$\frac{1}{120}$@@$\frac{1}{8}$

二、计算下面各题，怎样简便就怎样计算。
$8×\frac{2}{9} + 2÷9$             $(\frac{1}{36} + \frac{1}{45} + \frac{1}{60})÷2$                  $\frac{9}{20}÷[1.5×(\frac{1}{5} + \frac{4}{5})]$

答案： 2@@$\frac{1}{30}$@@$\frac{3}{10}$