《2025年亮点给力计算天天练五年级数学下册北师大版》

一、直接写出得数。（每题1分，共32分）
$\frac{5}{7} \times \frac{14}{25} =$ $\frac{7}{8} \times \frac{11}{14} =$ $\frac{10}{19} + \frac{1}{19} =$ $\frac{1}{36} + \frac{5}{12} + \frac{2}{9} =$
$\frac{5}{8} \times \frac{16}{35} =$ $\frac{2}{3} \times \frac{7}{8} =$ $3.5 - \frac{3}{2} =$ $2 - \frac{3}{7} - \frac{9}{7} =$
$\frac{4}{5} - \frac{7}{10} =$ $\frac{8}{27} \times \frac{9}{16} =$ $\frac{4}{15} \times \frac{7}{8} =$ $\frac{3}{4} + \frac{7}{4} - 2 =$
$\frac{3}{4} \times \frac{1}{12} =$ $\frac{3}{25} \times \frac{5}{9} =$ $\frac{4}{9} \times \frac{3}{8} =$ $4 - \frac{1}{2} - \frac{3}{4} =$
$\frac{3}{4} \times \frac{4}{9} =$ $5 - \frac{3}{4} =$ $\frac{5}{7} \times \frac{21}{25} =$ $\frac{1}{8} + \frac{7}{16} + \frac{5}{8} =$
$\frac{7}{9} - \frac{2}{3} =$ $\frac{1}{5} - \frac{1}{6} =$ $\frac{19}{20} - \frac{3}{4} =$ $\frac{2}{5} - \frac{1}{3} + \frac{1}{6} =$
$\frac{1}{2} \times \frac{6}{7} =$ $15 \times \frac{1}{20} =$ $\frac{8}{75} \times \frac{15}{64} =$ $\frac{4}{5} + \frac{5}{7} + \frac{1}{2} =$
$\frac{5}{6} \times \frac{9}{25} =$ $\frac{9}{10} \times \frac{5}{27} =$ $\frac{25}{36} \times \frac{3}{5} =$ $\frac{1}{5} + \frac{1}{4} + \frac{3}{20} =$

答案： $\frac{2}{5}$ $\frac{11}{16}$ $\frac{11}{19}$ $\frac{2}{3}$
$\frac{2}{7}$ $\frac{7}{12}$ 2 $\frac{2}{7}$
$\frac{1}{10}$ $\frac{1}{6}$ $\frac{7}{30}$ $\frac{1}{2}$
$\frac{1}{16}$ $\frac{1}{15}$ $\frac{1}{6}$ $\frac{11}{4}$
$\frac{1}{3}$ $4\frac{1}{4}$ $\frac{3}{5}$ $\frac{19}{16}$
$\frac{1}{9}$ $\frac{1}{30}$ $\frac{1}{5}$ $\frac{7}{30}$
$\frac{3}{7}$ $\frac{3}{4}$ $\frac{1}{40}$ $\frac{141}{70}$
$\frac{3}{10}$ $\frac{1}{6}$ $\frac{5}{12}$ $\frac{3}{5}$

二、计算下面各题，能简算的要简算。（每题4分，共24分）
$\frac{6}{7} + \frac{3}{14} + \frac{4}{21}$ $\frac{5}{12} + (\frac{3}{4} - \frac{2}{3})$ $\frac{5}{8} - \frac{1}{2} + \frac{3}{8} + \frac{1}{2}$
$\frac{8}{5} - \frac{7}{12} - \frac{5}{12}$ $\frac{7}{15} + \frac{19}{21} + \frac{2}{21} - \frac{1}{15}$ $\frac{5}{9} + \frac{2}{13} + \frac{6}{9} + \frac{11}{13}$

答案： $\frac{53}{42}$ $\frac{1}{2}$ 1 $\frac{3}{5}$ $1\frac{2}{5}$ $2\frac{2}{9}$