《2025年口算训练六年级数学上册人教版双色升级版》

$(\frac{2}{5}+\frac{1}{15})÷7=$$\frac{1}{15}$
$(\frac{3}{4}-\frac{3}{8})÷8=$$\frac{3}{64}$
$(\frac{4}{21}+\frac{1}{7})×21=$$7$
$4÷(\frac{3}{8}-\frac{5}{16})=$$64$
$(\frac{5}{14}+\frac{3}{7})×14=$$11$
$\frac{7}{12}×\frac{1}{5}×60=$$7$
$15×\frac{2}{5}÷\frac{1}{10}=$$60$
$15÷(\frac{1}{3}-\frac{1}{8})=$$72$
$\frac{4}{5}×\frac{2}{7}+\frac{2}{7}×\frac{1}{5}=$$\frac{2}{7}$
$\frac{4}{7}×\frac{6}{13}÷\frac{3}{7}=$$\frac{8}{13}$
$\frac{1}{6}÷\frac{3}{8}×48=$$\frac{64}{3}$
$\frac{5}{12}×\frac{3}{10}×80=$$10$
$(\frac{1}{4}+\frac{5}{6})×36=$$39$

答案： $(\frac{2}{5}+\frac{1}{15})÷7$
$=(\frac{6}{15}+\frac{1}{15})÷7$
$=\frac{7}{15}÷7$
$=\frac{7}{15}×\frac{1}{7}$
$=\frac{1}{15}$
$(\frac{3}{4}-\frac{3}{8})÷8$
$=(\frac{6}{8}-\frac{3}{8})÷8$
$=\frac{3}{8}÷8$
$=\frac{3}{8}×\frac{1}{8}$
$=\frac{3}{64}$
$(\frac{4}{21}+\frac{1}{7})×21$
$=(\frac{4}{21}+\frac{3}{21})×21$
$=\frac{7}{21}×21$
$=7$
$4÷(\frac{3}{8}-\frac{5}{16})$
$=4÷(\frac{6}{16}-\frac{5}{16})$
$=4÷\frac{1}{16}$
$=4×16$
$=64$
$(\frac{5}{14}+\frac{3}{7})×14$
$=(\frac{5}{14}+\frac{6}{14})×14$
$=\frac{11}{14}×14$
$=11$
$\frac{7}{12}×\frac{1}{5}×60$
$=\frac{7}{12}×(\frac{1}{5}×60)$
$=\frac{7}{12}×12$
$=7$
$15×\frac{2}{5}÷\frac{1}{10}$
$=6÷\frac{1}{10}$
$=6×10$
$=60$
$15÷(\frac{1}{3}-\frac{1}{8})$
$=15÷(\frac{8}{24}-\frac{3}{24})$
$=15÷\frac{5}{24}$
$=15×\frac{24}{5}$
$=72$
$\frac{4}{5}×\frac{2}{7}+\frac{2}{7}×\frac{1}{5}$
$=(\frac{4}{5}+\frac{1}{5})×\frac{2}{7}$
$=1×\frac{2}{7}$
$=\frac{2}{7}$
$\frac{4}{7}×\frac{6}{13}÷\frac{3}{7}$
$=\frac{4}{7}×\frac{6}{13}×\frac{7}{3}$
$=\frac{4}{7}×\frac{7}{3}×\frac{6}{13}$
$=\frac{4}{3}×\frac{6}{13}$
$=\frac{8}{13}$
$\frac{1}{6}÷\frac{3}{8}×48$
$=\frac{1}{6}×\frac{8}{3}×48$
$=\frac{4}{9}×48$
$=\frac{64}{3}$
$\frac{5}{12}×\frac{3}{10}×80$
$=\frac{1}{8}×80$
$=10$
$(\frac{1}{4}+\frac{5}{6})×36$
$=\frac{1}{4}×36+\frac{5}{6}×36$
$=9 + 30$
$=39$