《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。
$50×54\% =$ $1.2 - 25\% =$ $\frac{1}{4}+12.5\% =$
$4.8\div240\% =$ $14\%\div35\% =$ $16.5×0.2 =$
$102\% - 43\% =$ $\frac{1}{4}×\frac{2}{5}=$ $20\%+\frac{3}{4}=$
$\frac{1}{3}\div60\% =$ $45\%\div\frac{3}{5}=$ $\frac{5}{6}-30\% =$
$\frac{7}{12}+\frac{3}{8}=$ $18\%×\frac{1}{6}=$ $37.5\% + 54.3\% =$
$2.7\div10\% =$ $390\%\div20\% =$ $18\%\div50\% =$
$20\%×\frac{5}{8}=$ $15×6 =$ $9\div45\% =$
$34\% + 0.66 =$ $0.97 - 8\% =$ $25\%\div\frac{4}{9}=$
$99\%\div0.3 =$ $\frac{3}{4}×\frac{8}{9}=$ $100×25\% =$
$1.8×0.5 =$ $\frac{13}{25}\div\frac{13}{12}=$ $4.32\div1.2 =$

答案： 27@@0.95@@$\frac{3}{8}$@@2@@$\frac{2}{5}$@@3.3@@59%@@$\frac{1}{10}$@@$\frac{19}{20}$@@$\frac{5}{9}$@@$\frac{3}{4}$@@$\frac{8}{15}$@@$\frac{23}{24}$@@$\frac{3}{100}$@@91.8%@@27@@19.5@@0.36@@$\frac{1}{8}$@@90@@20@@1@@0.89@@$\frac{9}{16}$@@3.3@@$\frac{2}{3}$@@25@@0.9@@$\frac{12}{25}$@@3.6

二、解方程。
$(\frac{4}{5}×30\%)x = 7.2$ $2.5×8 + 40\%x = 40$ $0.1 + 90\%x + 20\%x = 0.5$

答案： $x = 30$@@$x = 50$@@$x = \frac{4}{11}$