《2025年黄冈小状元同步计算天天练六年级数学下册北师大版》

1. 填一填，算一算。
$\frac{5}{6}-\frac{2}{7}$
$=\frac{(\ \ )}{42}-\frac{(\ \ )}{(\ \ )}$
$=\frac{(\ \ )}{(\ \ )}$
$\frac{5}{12}\times\frac{3}{5}$
$=\frac{(\ \ )\times(\ \ )}{(\ \ )\times(\ \ )}$
$=\frac{(\ \ )}{(\ \ )}$
$\frac{3}{4}\div\frac{7}{16}$
$=\frac{(\ \ )}{(\ \ )}\times\frac{(\ \ )}{(\ \ )}$
$=\frac{(\ \ )}{(\ \ )}$

答案： $\frac{5}{6}-\frac{2}{7}$
=$\frac{35}{42}-\frac{12}{42}$
=$\frac{23}{42}$
$\frac{5}{12}\times\frac{3}{5}$
=$\frac{5\times3}{12\times5}$
=$\frac{1}{4}$
$\frac{3}{4}\div\frac{7}{16}$
=$\frac{3}{4}\times\frac{16}{7}$
=$\frac{12}{7}$

2. 计算下面各题。
$\frac{4}{15}+\frac{8}{15}-\frac{2}{5}+\frac{1}{5}$
$\frac{1}{2}\times(\frac{2}{5}-\frac{3}{10})$
$\frac{1}{3}\times6\div\frac{1}{3}\times6$
$\frac{2}{9}+\frac{1}{2}\div\frac{4}{5}+\frac{3}{8}$
$12\times\frac{5}{6}+\frac{5}{8}\div\frac{8}{5}$
$\frac{5}{16}\times[(8 - \frac{7}{2})\div\frac{3}{4}]+\frac{1}{4}$

答案： $\frac{4}{15}+\frac{8}{15}-\frac{2}{5}+\frac{1}{5}$
=$\frac{4}{5}-\frac{2}{5}+\frac{1}{5}$
=$\frac{3}{5}$
$\frac{1}{2}\times(\frac{2}{5}-\frac{3}{10})$
=$\frac{1}{2}\times\frac{1}{10}$
=$\frac{1}{20}$
$\frac{1}{3}\times6\div\frac{1}{3}\times6$
=$\frac{1}{3}\div\frac{1}{3}\times6\times6$
=$1\times36$
=$36$
$\frac{2}{9}+\frac{1}{2}\div\frac{4}{5}+\frac{3}{8}$
=$\frac{2}{9}+\frac{1}{2}\times\frac{5}{4}+\frac{3}{8}$
=$\frac{2}{9}+(\frac{5}{8}+\frac{3}{8})$
=$\frac{2}{9}+1$
=$1\frac{2}{9}$
$12\times\frac{5}{6}\div\frac{5}{8}\div\frac{8}{5}$
=$12\times\frac{5}{6}\times\frac{8}{5}\times\frac{5}{8}$
=$10$
$\frac{5}{16}\times[(8 - \frac{7}{2})\div\frac{3}{4}]+\frac{1}{4}$
=$\frac{5}{16}\times[\frac{9}{2}\times\frac{4}{3}]+\frac{1}{4}$
=$\frac{5}{16}\times6+\frac{1}{4}$
=$\frac{17}{8}$