《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4分钟完成）
$\frac{8}{9} \div 3 =$ $\frac{13}{12} \div 3 =$ $\frac{4}{9} \div 40 =$ $\frac{5}{7} \div 28 =$
$\frac{22}{21} \div 2 =$ $\frac{6}{11} \div 5 =$ $\frac{7}{8} \div 6 =$ $\frac{2}{5} \div 12 =$
$\frac{14}{19} \div 7 =$ $\frac{21}{4} \div 7 =$ $\frac{25}{39} \div 5 =$ $\frac{7}{24} \div 49 =$
$\frac{1}{5} \div 6 =$ $\frac{9}{10} \div 36 =$ $\frac{9}{11} \div 3 =$ $\frac{8}{5} \div 16 =$
$\frac{1}{10} \div 2 =$ $\frac{25}{27} \div 5 =$ $\frac{2}{7} \div 4 =$ $\frac{4}{5} \div 24 =$
$\frac{9}{11} \div 7 =$ $\frac{8}{11} \div 4 =$ $\frac{3}{4} \div 9 =$ $\frac{19}{4} \div 57 =$
$\frac{6}{5} \div 2 =$ $\frac{12}{17} \div 48 =$ $\frac{18}{5} \div 9 =$ $\frac{15}{19} \div 5 =$

答案： $\frac{8}{27}$@@$\frac{13}{36}$@@$\frac{1}{90}$@@$\frac{5}{196}$@@$\frac{11}{21}$@@$\frac{6}{55}$@@$\frac{7}{48}$@@$\frac{1}{30}$@@$\frac{2}{19}$@@$\frac{3}{4}$@@$\frac{5}{39}$@@$\frac{1}{168}$@@$\frac{1}{30}$@@$\frac{1}{40}$@@$\frac{3}{11}$@@$\frac{1}{10}$@@$\frac{1}{20}$@@$\frac{5}{27}$@@$\frac{1}{14}$@@$\frac{1}{30}$@@$\frac{9}{77}$@@$\frac{2}{11}$@@$\frac{1}{12}$@@$\frac{1}{12}$@@$\frac{3}{5}$@@$\frac{1}{68}$@@$\frac{2}{5}$@@$\frac{3}{19}$

2. 解方程。（建议4分钟完成）
$x + \frac{1}{6} = \frac{1}{2}$ $x - \frac{3}{4} = \frac{4}{5}$ $x \div 7 = \frac{5}{14}$
$10x = \frac{5}{8}$ $6x = \frac{12}{13}$ $26x = \frac{13}{42}$

答案： $x = \frac{1}{3}$@@$x = \frac{31}{20}$@@$x = \frac{5}{2}$@@$x = \frac{1}{16}$@@$x = \frac{2}{13}$@@$x = \frac{1}{84}$

用简便方法计算。
$17\frac{1}{19} \div 18$ $20\frac{1}{22} \div 21$ $34\frac{1}{32} \div 33$

答案： $\frac{18}{19}$@@$\frac{21}{22}$@@$\frac{33}{32}$