《2025年小学数学计算高手每日10分钟五年级数学下册苏教版》

1. 在( )里填上合适的数。
$1-(\ \ \ \ )=\frac{3}{10}$ $(\ \ \ \ )-\frac{2}{7}=\frac{2}{7}$
$(\ \ \ \ )+\frac{1}{8}=1$ $\frac{7}{5}+(\ \ \ \ )=\frac{13}{5}$
$\frac{12}{13}-(\ \ \ \ )=\frac{5}{13}$ $\frac{5}{3}-(\ \ \ \ )=\frac{4}{3}$
$\frac{4}{9}+(\ \ \ \ )=\frac{8}{9}$ $\frac{21}{40}+(\ \ \ \ )=\frac{21}{40}$
$(\ \ \ \ )-\frac{2}{3}=\frac{1}{3}$ $(\ \ \ \ )-\frac{8}{20}=\frac{19}{20}$
$(\ \ \ \ )-\frac{3}{23}=\frac{15}{23}$ $(\ \ \ \ )-\frac{4}{11}=\frac{7}{11}$
$(\ \ \ \ )+\frac{3}{17}=\frac{9}{17}$ $\frac{3}{14}+(\ \ \ \ )=\frac{18}{14}$
$(\ \ \ \ )+\frac{9}{8}=2$ $\frac{9}{10}-(\ \ \ \ )=\frac{6}{10}$

答案： $\frac{7}{10}\ \frac{7}{8}\ \frac{7}{13}\ \frac{4}{9}\ 1\ \frac{18}{23}\ \frac{6}{17}\ \frac{7}{8}\ \frac{4}{7}\ \frac{6}{5}\ \frac{1}{3}\ 0\ \frac{27}{20}\ 1\ \frac{15}{14}\ \frac{3}{10}$

2. 脱式计算。(怎样简便就怎样算)
$\frac{9}{43}+\frac{8}{43}-\frac{7}{43}$ $\frac{6}{23}+\frac{16}{23}-\frac{19}{23}$ $\frac{17}{21}-\frac{4}{21}-\frac{3}{21}$
$\frac{21}{11}-\frac{3}{11}-\frac{9}{11}$ $\frac{7}{18}+\frac{11}{18}-\frac{5}{18}$ $\frac{6}{53}+\frac{6}{53}-\frac{11}{53}$

答案： $\frac{10}{43}\ \frac{9}{11}\ \frac{3}{23}\ \frac{13}{18}\ \frac{10}{21}\ \frac{1}{53}$