《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**
$\frac{1}{5} \div \frac{5}{9}=$ $\frac{15}{2} \times \frac{8}{7}=$ $\frac{8}{5} - \frac{1}{3}=$
$\frac{1}{7} \times \frac{7}{8}=$ $3.9 - 2.6=$ $\frac{1}{5} \div \frac{3}{10}=$
$\frac{1}{30} + \frac{1}{2}=$ $380 \times 20=$ $2 - 1.46=$
$0.55 \div 11=$ $\frac{4}{5} + \frac{5}{6}=$ $1.7 \times 30=$
$1.02 \times 30=$ $\frac{1}{8} \div \frac{1}{3}=$ $100 \div \frac{10}{3}=$
$5.7 \div 0.19=$ $3.25 \times 2=$ $2.5 + 0.75=$
$\frac{3}{4} + \frac{3}{4}=$ $\frac{6}{11} \div \frac{3}{11}=$ $\frac{5}{6} \div \frac{2}{3}=$
$\frac{15}{2} - 3=$ $\frac{13}{26} \times \frac{8}{39}=$ $\frac{4}{9} - \frac{3}{16}=$
$5.68 + 2.5=$ $388 - 199=$ $4.25 \div 0.85=$
$9 - 0.38=$ $2 \div \frac{1}{5}=$ $1.68 + 0.02=$

答案： $\frac{9}{25}$@@$\frac{60}{7}$@@$\frac{19}{15}$@@$\frac{1}{8}$@@1.3@@$\frac{2}{3}$@@$\frac{8}{15}$@@7600@@0.54@@0.05@@$\frac{49}{30}$@@51@@30.6@@$\frac{3}{8}$@@30@@30@@6.5@@3.25@@$\frac{3}{2}$@@2@@$\frac{5}{4}$@@$\frac{9}{2}$@@$\frac{4}{39}$@@$\frac{37}{144}$@@8.18@@189@@5@@8.62@@10@@1.7

二、计算下面各题，怎样简便就怎样计算**
$2.5 \times 44$ $\frac{7}{9} \div \frac{11}{5} + \frac{5}{11} \times \frac{2}{9}$ $\frac{1}{6} \div [1 \div (\frac{3}{5} - \frac{3}{10})]$

答案： 110@@$\frac{5}{11}$@@$\frac{1}{20}$