《2025年口算训练宁波出版社六年级数学上册人教版》

(十一)
$\frac{1}{6} × 3= $$\frac{1}{2}$
$\frac{6}{5} × \frac{5}{6}= $1
$\frac{4}{7} × 2= $$\frac{8}{7}$
$\frac{7}{13} × \frac{1}{14}= $$\frac{1}{26}$
$10 × \frac{1}{5}= $2
$\frac{8}{9} × \frac{2}{3}= $$\frac{16}{27}$
$9 × \frac{2}{3}= $6
$4 × \frac{1}{4}= $1
$\frac{1}{3} × \frac{2}{7}= $$\frac{2}{21}$
$\frac{7}{4} × \frac{4}{7}= $1
$\frac{3}{5} × \frac{5}{6}= $$\frac{1}{2}$
$\frac{8}{9} × 18= $16
$16 × \frac{7}{8}= $14
$\frac{7}{24} × \frac{3}{14}= $$\frac{1}{16}$
$\frac{1}{4} × 0.8= $0.2
$\frac{4}{9} × \frac{4}{7}= $$\frac{16}{63}$
$\frac{2}{7} × \frac{4}{8}= $$\frac{1}{7}$
$0.9 × \frac{2}{3}= $0.6
$15 × \frac{6}{5}= $18
$\frac{1}{2} × 0.6= $0.3
$5.4 × \frac{2}{9}= $1.2
$6 × \frac{11}{18}= $$\frac{11}{3}$
$\frac{3}{8} × 2.4= $0.9
$\frac{3}{7} × \frac{7}{3}= $1

答案： $\frac{1}{6} × 3 = \frac{1×3}{6} = \frac{1}{2}$
$\frac{6}{5} × \frac{5}{6} = 1$
$\frac{4}{7} × 2 = \frac{4×2}{7} = \frac{8}{7}$
$\frac{7}{13} × \frac{1}{14} = \frac{7×1}{13×14} = \frac{1}{26}$
$10 × \frac{1}{5} = 2$
$\frac{8}{9} × \frac{2}{3} = \frac{8×2}{9×3} = \frac{16}{27}$
$9 × \frac{2}{3} = 6$
$4 × \frac{1}{4} = 1$
$\frac{1}{3} × \frac{2}{7} = \frac{1×2}{3×7} = \frac{2}{21}$
$\frac{7}{4} × \frac{4}{7} = 1$
$\frac{3}{5} × \frac{5}{6} = \frac{3×5}{5×6} = \frac{1}{2}$
$\frac{8}{9} × 18 = 8×2 = 16$
$16 × \frac{7}{8} = 2×7 = 14$
$\frac{7}{24} × \frac{3}{14} = \frac{7×3}{24×14} = \frac{1}{16}$
$\frac{1}{4} × 0.8 = 0.2$
$\frac{4}{9} × \frac{4}{7} = \frac{16}{63}$
$\frac{2}{7} × \frac{4}{8} = \frac{2}{7} × \frac{1}{2} = \frac{1}{7}$
$0.9 × \frac{2}{3} = 0.6$
$15 × \frac{6}{5} = 18$
$\frac{1}{2} × 0.6 = 0.3$
$5.4 × \frac{2}{9} = 1.2$
$6 × \frac{11}{18} = \frac{11}{3}$
$\frac{3}{8} × 2.4 = 0.9$
$\frac{3}{7} × \frac{7}{3} = 1$