《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**
$7.84 \div 0.4=$ $\frac{2}{17} \times \frac{85}{9}=$ $\frac{7}{10} + \frac{3}{5}=$
$3.5 \times 60=$ $68 \div 20=$ $5.79 - 2=$
$\frac{1}{6} + \frac{5}{8}=$ $\frac{15}{16} - \frac{3}{4}=$ $\frac{3}{8} \times 40=$
$\frac{5}{36} \div \frac{5}{7}=$ $0.19 \times 9=$ $4.96 + 20.5=$
$\frac{8}{9} - \frac{1}{6}=$ $18 \div \frac{54}{49}=$ $\frac{5}{14} \div \frac{10}{21}=$
$\frac{4}{5} \times \frac{1}{8}=$ $\frac{5}{4} - \frac{7}{8}=$ $1.9 \times 0.7=$
$5.85 + 6.8=$ $3.6 \div 7.2=$ $1.08 - 0.89=$
$\frac{4}{7} \div \frac{2}{3}=$ $\frac{8}{5} + \frac{5}{8}=$ $\frac{6}{11} \div \frac{23}{11}=$
$680 - 290=$ $\frac{1}{3} \div \frac{1}{15}=$ $\frac{5}{12} + \frac{1}{8}=$
$2.1 - 2.09=$ $267 + 303=$ $405 \times 8=$

答案： 19.6@@$\frac{10}{9}$@@$\frac{13}{10}$@@210@@3.4@@3.79@@$\frac{19}{24}$@@$\frac{3}{16}$@@15@@$\frac{7}{36}$@@1.71@@25.46@@$\frac{13}{18}$@@$\frac{49}{3}$@@$\frac{3}{4}$@@$\frac{1}{10}$@@$\frac{3}{8}$@@1.33@@12.65@@0.5@@0.19@@$\frac{6}{7}$@@$\frac{89}{40}$@@$\frac{6}{23}$@@390@@5@@$\frac{13}{24}$@@0.01@@570@@3240

二、计算下面各题，怎样简便就怎样计算**
$(\frac{5}{12} + \frac{4}{9} + \frac{1}{8}) \times 72$ $0.8 \times (5 - 0.86) \div 1.2$ $\frac{3}{13} \times \frac{4}{5} + \frac{10}{13} \div \frac{5}{4} - \frac{4}{5}$

答案： 71@@2.76@@0