《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**
$88\% \times \frac{1}{2}=$ $0.35 + 65\%=$ $0.9 \div 2=$
$60 \div 50\%=$ $3\% \times 20\%=$ $15\% + \frac{2}{5}=$
$0.3 - 0.125=$ $6.4 \div 3.2=$ $\frac{13}{19} \div \frac{7}{19}=$
$4 \times 80\%=$ $3.93 - 0.393=$ $50\% \times 5\%=$
$6 \times 4\%=$ $\frac{3}{4} - \frac{5}{9}=$ $\frac{1}{3} \div \frac{11}{6}=$
$\frac{3}{7} \times \frac{7}{36}=$ $\frac{2}{3} + \frac{3}{5}=$ $0.9 + 1.01=$
$5 - 4.75=$ $12.5 \div 5=$ $75 \times 80\%=$
$268 \div 4=$ $\frac{5}{12} \times \frac{3}{25}=$ $\frac{9}{11} - \frac{3}{44}=$
$\frac{7}{8} \div \frac{7}{9}=$ $0.8 + 50\%=$ $4.8 + 5.6=$
$36\% \times 8\%=$ $0.5 + \frac{3}{4}=$ $80\% \times \frac{5}{4}=$

答案： 0.44@@1@@0.45@@120@@0.006@@$\frac{11}{20}$@@0.175@@2@@$\frac{13}{7}$@@3.2@@3.537@@0.025@@0.24@@$\frac{7}{36}$@@$\frac{2}{11}$@@$\frac{1}{12}$@@$\frac{19}{15}$@@1.91@@0.25@@2.5@@60@@67@@$\frac{1}{20}$@@$\frac{3}{4}$@@$\frac{9}{8}$@@1.3@@10.4@@0.0288@@$\frac{5}{4}$@@1

二、解方程**
$\frac{5}{8}x - \frac{1}{4} = 1$ $x - 0.25x = 10.5$ $x + \frac{1}{4}x = \frac{2}{7} \times \frac{5}{6}$

答案： $x = 2$@@$x = 14$@@$x=\frac{4}{21}$