《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。
$3.2\% + 16.8\% =$ $7\div35\% =$ $78\%×\frac{10}{13}=$
$\frac{5}{8}×\frac{4}{15}=$ $80\%-\frac{5}{7}=$ $25\% + 0.2 =$
$0.3 + 120\% =$ $8.1 + 19\% =$ $1.3 - 33\% =$
$2×25\% =$ $\frac{11}{12}-\frac{5}{6}=$ $\frac{4}{3}×0.6 =$
$0.36\div10\% =$ $0.18×20\% =$ $10\%×23 =$
$0.1 + 5\% =$ $87\%\div0.01 =$ $\frac{9}{10}\div\frac{3}{5}=$
$1 - 3.5\% =$ $\frac{3}{5}×\frac{5}{9}=$ $35×60\% =$
$5\div\frac{1}{12}=$ $126 - 89 =$ $26\div\frac{13}{14}=$
$23.5 - 0.25 =$ $\frac{2}{3}×60\% =$ $\frac{8}{7}-\frac{5}{6}=$
$25\%×25\% =$ $36.8\% + 42.2\% =$ $\frac{4}{5}\div\frac{5}{12}=$

答案： 20%@@20@@$\frac{3}{5}$@@$\frac{1}{6}$@@$\frac{3}{35}$@@0.45@@1.5@@8.29@@0.97@@0.5@@$\frac{1}{12}$@@0.8@@3.6@@0.036@@2.3@@0.15@@87@@$\frac{3}{2}$@@0.965@@$\frac{1}{3}$@@21@@60@@37@@28@@23.25@@$\frac{2}{5}$@@$\frac{13}{42}$@@0.0625@@79%@@$\frac{48}{25}$

二、解方程。
$2\%x=\frac{13}{40}$ $2.6x - 90\%x = 5×17$ $x + 40\% = 28$

答案： $x = \frac{65}{4}$@@$x = 50$@@$x = 27.6$