《2025年心算口算巧算六年级上册北师大版》

计算下面各题。
$\frac{7}{15}×3=$
$\frac{7}{18}×\frac{3}{14}=$
$\frac{7}{24}×9=$
$\frac{5}{49}×7=$
$\frac{5}{32}×6=$
$\frac{7}{34}×17=$
$\frac{2}{15}×\frac{3}{4}=$
$\frac{9}{8}×\frac{7}{8}=$
$\frac{1}{2}×\frac{7}{36}=$
$\frac{3}{8}×\frac{6}{9}=$
$\frac{5}{7}×\frac{7}{10}=$
$\frac{7}{9}×\frac{9}{49}=$
$\frac{5}{6}×\frac{3}{7}=$
$\frac{4}{9}×\frac{5}{8}=$
$\frac{10}{11}×\frac{2}{5}=$
$\frac{2}{5}÷\frac{3}{8}=$
$\frac{10}{11}÷\frac{21}{22}=$
$\frac{1}{4}÷\frac{2}{7}=$
$\frac{7}{13}÷\frac{1}{3}=$
$\frac{1}{3}÷4=$
$\frac{4}{9}÷\frac{44}{9}=$
$\frac{5}{18}÷\frac{10}{9}=$
$\frac{7}{12}÷\frac{1}{18}=$
$\frac{1}{4}÷\frac{1}{8}=$
$\frac{3}{5}÷8=$
$\frac{12}{13}÷\frac{12}{11}=$
$\frac{18}{19}÷\frac{36}{17}=$
$\frac{8}{7}÷\frac{4}{3}=$
$\frac{15}{13}÷\frac{5}{6}=$
$\frac{7}{15}÷\frac{4}{5}=$

答案： $\frac{7}{5}$；$\frac{1}{12}$；$\frac{21}{8}$；$\frac{5}{7}$；$\frac{15}{16}$；$\frac{7}{2}$；$\frac{1}{10}$；$\frac{63}{64}$；$\frac{7}{72}$；$\frac{1}{4}$；$\frac{1}{2}$；$\frac{1}{7}$；$\frac{5}{14}$；$\frac{5}{18}$；$\frac{4}{11}$；$\frac{16}{15}$；$\frac{20}{21}$；$\frac{7}{8}$；$\frac{21}{13}$；$\frac{1}{12}$；$\frac{1}{11}$；$\frac{1}{4}$；$\frac{21}{2}$；2；$\frac{3}{40}$；$\frac{11}{13}$；$\frac{17}{38}$；$\frac{6}{7}$；$\frac{18}{13}$；$\frac{7}{12}$