《2025年阳光同学计算小达人五年级数学下册冀教版》

1. 直接写出得数。（建议2分钟完成）
$\frac{5}{8} \div \frac{15}{16} =$ $\frac{4}{11} \div \frac{1}{3} =$ $\frac{5}{12} \div \frac{3}{8} =$ $\frac{3}{5} \div \frac{3}{4} =$
$\frac{7}{11} \div \frac{7}{9} =$ $\frac{1}{10} \div \frac{8}{21} =$ $\frac{5}{48} \div 5 =$ $\frac{34}{35} \div \frac{17}{2} =$
$\frac{7}{30} \div \frac{14}{15} =$ $\frac{2}{3} \div \frac{1}{2} =$ $\frac{5}{6} \div \frac{5}{9} =$ $\frac{44}{45} \div 22 =$
$24 \div \frac{3}{8} =$ $16 \div \frac{4}{7} =$ $\frac{4}{9} \div \frac{4}{5} =$ $1\frac{2}{3} \div 1\frac{2}{3} =$

答案： $\frac{2}{3}$@@$\frac{12}{11}$@@$\frac{10}{9}$@@$\frac{4}{5}$@@$\frac{9}{11}$@@$\frac{21}{80}$@@$\frac{1}{48}$@@$\frac{4}{35}$@@$\frac{1}{4}$@@$\frac{4}{3}$@@$\frac{3}{2}$@@$\frac{2}{45}$@@64@@28@@$\frac{5}{9}$@@1

2. 解方程。（建议6分钟完成）
$4x = \frac{8}{9}$ $\frac{5}{7}x = 1$ $\frac{11}{12}x = \frac{7}{36}$
$\frac{7}{8}x = \frac{7}{8}$ $\frac{3}{10}x = 27$ $\frac{5}{21}x = \frac{15}{14}$
$\frac{2}{5}x = \frac{8}{15}$ $\frac{9}{5}x = \frac{3}{25}$ $\frac{1}{5}x = 10$

答案： $x = \frac{2}{9}$@@$x = \frac{7}{5}$@@$x = \frac{7}{33}$@@$x = 1$@@$x = 90$@@$x = \frac{9}{2}$@@$x = \frac{4}{3}$@@$x = \frac{1}{15}$@@$x = 50$

照样子用简便方法计算。
$\frac{1}{3535} \div \frac{1}{5353}$ $\frac{1}{6363} \div \frac{1}{3636}$ $\frac{1}{7272} \div \frac{1}{2727}$
$= \frac{1}{3535} \times 5353$
$= \frac{1}{35 \times 101} \times 101 \times 53$
$= \frac{53}{35}$

答案： 提升练$\frac{4}{7}$，$\frac{3}{8}$