《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。
$30\%×20 =$ $54\%\div90\% =$ $0.23 - 1\% =$
$0.18 + 2.92 =$ $\frac{4}{5}×\frac{15}{16}=$ $\frac{6}{7}\div30\% =$
$0.15×0.3 =$ $100\%-\frac{5}{8}=$ $9.25 + 15\% =$
$57\%\div19\% =$ $\frac{1}{2}+\frac{3}{7}=$ $24\%×5 =$
$300\%×\frac{2}{7}=$ $80\%\div16\% =$ $0.72\div80\% =$
$0.2 + 0.25 =$ $\frac{5}{6}×36\% =$ $24\%\div\frac{1}{2}=$
$44\div22\% =$ $62\%\div0.31 =$ $66\% + 3.34 =$
$285 - 169 =$ $40\%+\frac{1}{4}=$ $2.5 - 40\% =$
$\frac{2}{7}×14\% =$ $\frac{4}{7}×2.8 =$ $72\%\div0.9 =$
$54\%×5\% =$ $3 - 75\% =$ $\frac{3}{7}-\frac{1}{5}=$

答案： 6@@0.6@@0.22@@3.1@@$\frac{3}{4}$@@$\frac{20}{7}$@@0.045@@$\frac{3}{8}$@@9.4@@3@@$\frac{13}{14}$@@1.2@@$\frac{6}{7}$@@5@@0.9@@0.45@@0.3@@0.48@@200@@2@@4@@116@@$\frac{13}{20}$@@2.1@@$\frac{1}{25}$@@1.6@@0.8@@0.027@@2.25@@$\frac{8}{35}$

二、计算下面各题，怎样简便就怎样计算。
$(0.78-\frac{3}{4})\div\frac{3}{4}$ $75\% + 0.25×\frac{4}{7}$ $909×[(118 + 602)\div80]$

答案： 0.04@@$\frac{25}{28}$@@8181