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1. 直接写出得数。
$\frac{2}{7}÷\frac{2}{7}=$
$\frac{10}{7}÷\frac{7}{13}=$
$\frac{2}{9}÷\frac{3}{2}=$
$4÷\frac{1}{6}=$
$\frac{11}{14}÷\frac{1}{7}=$
$\frac{4}{3}÷\frac{1}{4}=$
$\frac{4}{9}÷6=$
$\frac{7}{6}÷\frac{5}{6}=$
$\frac{7}{5}÷\frac{4}{25}=$
$\frac{1}{5}÷8=$
$\frac{4}{5}÷\frac{8}{3}=$
$\frac{3}{16}÷\frac{1}{4}=$
$3÷\frac{3}{5}=$
$\frac{1}{22}÷\frac{3}{11}=$
$\frac{5}{14}÷15=$
$\frac{2}{7}÷\frac{2}{7}=$
$\frac{10}{7}÷\frac{7}{13}=$
$\frac{2}{9}÷\frac{3}{2}=$
$4÷\frac{1}{6}=$
$\frac{11}{14}÷\frac{1}{7}=$
$\frac{4}{3}÷\frac{1}{4}=$
$\frac{4}{9}÷6=$
$\frac{7}{6}÷\frac{5}{6}=$
$\frac{7}{5}÷\frac{4}{25}=$
$\frac{1}{5}÷8=$
$\frac{4}{5}÷\frac{8}{3}=$
$\frac{3}{16}÷\frac{1}{4}=$
$3÷\frac{3}{5}=$
$\frac{1}{22}÷\frac{3}{11}=$
$\frac{5}{14}÷15=$
答案
$\frac{2}{7}÷\frac{2}{7}=\frac{2}{7}×\frac{7}{2}=1$
$\frac{10}{7}÷\frac{7}{13}=\frac{10}{7}×\frac{13}{7}=\frac{130}{49}$
$\frac{2}{9}÷\frac{3}{2}=\frac{2}{9}×\frac{2}{3}=\frac{4}{27}$
$4÷\frac{1}{6}=4×6=24$
$\frac{11}{14}÷\frac{1}{7}=\frac{11}{14}×7=\frac{11}{2}$
$\frac{4}{3}÷\frac{1}{4}=\frac{4}{3}×4=\frac{16}{3}$
$\frac{4}{9}÷6=\frac{4}{9}×\frac{1}{6}=\frac{2}{27}$
$\frac{7}{6}÷\frac{5}{6}=\frac{7}{6}×\frac{6}{5}=\frac{7}{5}$
$\frac{7}{5}÷\frac{4}{25}=\frac{7}{5}×\frac{25}{4}=\frac{35}{4}$
$\frac{1}{5}÷8=\frac{1}{5}×\frac{1}{8}=\frac{1}{40}$
$\frac{4}{5}÷\frac{8}{3}=\frac{4}{5}×\frac{3}{8}=\frac{3}{10}$
$\frac{3}{16}÷\frac{1}{4}=\frac{3}{16}×4=\frac{3}{4}$
$3÷\frac{3}{5}=3×\frac{5}{3}=5$
$\frac{1}{22}÷\frac{3}{11}=\frac{1}{22}×\frac{11}{3}=\frac{1}{6}$
$\frac{5}{14}÷15=\frac{5}{14}×\frac{1}{15}=\frac{1}{42}$
$\frac{10}{7}÷\frac{7}{13}=\frac{10}{7}×\frac{13}{7}=\frac{130}{49}$
$\frac{2}{9}÷\frac{3}{2}=\frac{2}{9}×\frac{2}{3}=\frac{4}{27}$
$4÷\frac{1}{6}=4×6=24$
$\frac{11}{14}÷\frac{1}{7}=\frac{11}{14}×7=\frac{11}{2}$
$\frac{4}{3}÷\frac{1}{4}=\frac{4}{3}×4=\frac{16}{3}$
$\frac{4}{9}÷6=\frac{4}{9}×\frac{1}{6}=\frac{2}{27}$
$\frac{7}{6}÷\frac{5}{6}=\frac{7}{6}×\frac{6}{5}=\frac{7}{5}$
$\frac{7}{5}÷\frac{4}{25}=\frac{7}{5}×\frac{25}{4}=\frac{35}{4}$
$\frac{1}{5}÷8=\frac{1}{5}×\frac{1}{8}=\frac{1}{40}$
$\frac{4}{5}÷\frac{8}{3}=\frac{4}{5}×\frac{3}{8}=\frac{3}{10}$
$\frac{3}{16}÷\frac{1}{4}=\frac{3}{16}×4=\frac{3}{4}$
$3÷\frac{3}{5}=3×\frac{5}{3}=5$
$\frac{1}{22}÷\frac{3}{11}=\frac{1}{22}×\frac{11}{3}=\frac{1}{6}$
$\frac{5}{14}÷15=\frac{5}{14}×\frac{1}{15}=\frac{1}{42}$
2. 解方程。
$\frac{7}{12}x=\frac{1}{10}$
$x÷\frac{3}{7}=\frac{4}{21}$
$27x=\frac{9}{4}$
$\frac{7}{12}x=\frac{1}{10}$
$x÷\frac{3}{7}=\frac{4}{21}$
$27x=\frac{9}{4}$
答案
解：$\frac{7}{12}x=\frac{1}{10}$
$x=\frac{1}{10}÷\frac{7}{12}$
$x=\frac{1}{10}×\frac{12}{7}$
$x=\frac{6}{35}$
解：$x÷\frac{3}{7}=\frac{4}{21}$
$x=\frac{4}{21}×\frac{3}{7}$
$x=\frac{4}{49}$
解：$27x=\frac{9}{4}$
$x=\frac{9}{4}÷27$
$x=\frac{9}{4}×\frac{1}{27}$
$x=\frac{1}{12}$
$x=\frac{1}{10}÷\frac{7}{12}$
$x=\frac{1}{10}×\frac{12}{7}$
$x=\frac{6}{35}$
解：$x÷\frac{3}{7}=\frac{4}{21}$
$x=\frac{4}{21}×\frac{3}{7}$
$x=\frac{4}{49}$
解：$27x=\frac{9}{4}$
$x=\frac{9}{4}÷27$
$x=\frac{9}{4}×\frac{1}{27}$
$x=\frac{1}{12}$
3. 脱式计算。
$\frac{11}{64}÷33$
$\frac{10}{21}÷\frac{15}{28}$
$\frac{9}{28}÷\frac{27}{16}$
$34÷(2+\frac{3}{7})$
$28+32÷\frac{8}{13}$
$8-8÷\frac{4}{3}$
$\frac{11}{64}÷33$
$\frac{10}{21}÷\frac{15}{28}$
$\frac{9}{28}÷\frac{27}{16}$
$34÷(2+\frac{3}{7})$
$28+32÷\frac{8}{13}$
$8-8÷\frac{4}{3}$
答案
$\frac{11}{64}÷33$
$=\frac{11}{64}×\frac{1}{33}$
$=\frac{1}{192}$
$\frac{10}{21}÷\frac{15}{28}$
$=\frac{10}{21}×\frac{28}{15}$
$=\frac{2×4}{3×3}$
$=\frac{8}{9}$
$\frac{9}{28}÷\frac{27}{16}$
$=\frac{9}{28}×\frac{16}{27}$
$=\frac{1×4}{7×3}$
$=\frac{4}{21}$
$34÷(2+\frac{3}{7})$
$=34÷\frac{17}{7}$
$=34×\frac{7}{17}$
$=14$
$28+32÷\frac{8}{13}$
$=28+32×\frac{13}{8}$
$=28+52$
$=80$
$8-8÷\frac{4}{3}$
$=8-8×\frac{3}{4}$
$=8-6$
$=2$
$=\frac{11}{64}×\frac{1}{33}$
$=\frac{1}{192}$
$\frac{10}{21}÷\frac{15}{28}$
$=\frac{10}{21}×\frac{28}{15}$
$=\frac{2×4}{3×3}$
$=\frac{8}{9}$
$\frac{9}{28}÷\frac{27}{16}$
$=\frac{9}{28}×\frac{16}{27}$
$=\frac{1×4}{7×3}$
$=\frac{4}{21}$
$34÷(2+\frac{3}{7})$
$=34÷\frac{17}{7}$
$=34×\frac{7}{17}$
$=14$
$28+32÷\frac{8}{13}$
$=28+32×\frac{13}{8}$
$=28+52$
$=80$
$8-8÷\frac{4}{3}$
$=8-8×\frac{3}{4}$
$=8-6$
$=2$
