《2025年阳光同学计算小达人五年级数学下册冀教版》

3. 解方程。
$\frac{3}{5}x = \frac{11}{20}$ $\frac{15}{7}x = \frac{10}{21}$ $(1 + \frac{1}{4})x = 100$
$(1 - \frac{1}{3})x = 18$ $\frac{4}{3}x - x = \frac{8}{9}$ $x + \frac{3}{5}x = 104$

答案： $x = \frac{11}{12}$@@$x = \frac{2}{9}$@@$x = 80$@@$x = 27$@@$x = \frac{8}{3}$@@$x = 65$

4. 计算下面各题。
$\frac{2}{5} + \frac{11}{8} \times \frac{5}{11}$ $\frac{5}{9} \div (\frac{3}{5} - \frac{1}{15} \times \frac{3}{2})$ $2 - \frac{3}{8} \div \frac{7}{16} - \frac{1}{7}$
$\frac{13}{7} - \frac{2}{7} \times \frac{7}{30}$ $63 \times (1 - \frac{4}{9}) \div \frac{7}{12}$ $\frac{7}{12} \times \frac{5}{11} + \frac{5}{12} \div \frac{11}{5}$
$\frac{17}{16} - \frac{9}{14} \times \frac{1}{3}$ $(\frac{5}{6} - \frac{1}{5}) \times 30 \div \frac{19}{18}$ $\frac{8}{11} \div (\frac{7}{8} \times \frac{4}{7}) - \frac{2}{3}$

答案： $\frac{41}{40}$@@$\frac{10}{9}$@@1@@$\frac{188}{105}$@@60@@$\frac{5}{11}$@@$\frac{95}{112}$@@18@@$\frac{26}{33}$