《2025年复习计划100分期末暑假衔接五年级数学苏教版中原农民出版社》

一、计算下面各题,能简算的要简算。
$\frac {4}{5}-\frac {2}{7}$ $\frac {8}{15}+\frac {7}{9}$ $\frac {7}{18}-\frac {1}{3}$
$\frac {6}{7}-\frac {5}{7}+\frac {2}{7}$ $\frac {5}{8}+(\frac {5}{6}-\frac {1}{4})$ $1-(\frac {10}{21}-\frac {3}{14})$
$\frac {9}{17}-\frac {1}{4}-\frac {1}{4}$ $1-\frac {1}{5}+\frac {1}{4}+\frac {1}{8}$ $\frac {5}{9}+(\frac {9}{10}-\frac {4}{9})$

答案： $\frac {18}{35}$ $\frac {59}{45}$ $\frac {1}{18}$ $\frac {3}{7}$ $\frac {29}{24}$ $\frac {31}{42}$ $\frac {1}{34}$ $\frac {47}{40}$ $\frac {91}{90}$

1. 用分数表示下面各题的商,结果是假分数的要化成带分数或整数。
$6÷13=$$\frac {6}{13}$ $5÷3=$$1\frac {2}{3}$ $13÷8=$$1\frac {5}{8}$ $18÷9=$2

答案： $\frac {6}{13}$ $1\frac {2}{3}$ $1\frac {5}{8}$ 2

2. 把下面的分数化成小数。(除不尽的保留三位小数)
$\frac {1}{6}\approx$0.167 $\frac {4}{5}= $0.8 $\frac {11}{4}= $2.75 $1\frac {2}{3}\approx$1.667
$\frac {3}{2}= $1.5 $\frac {5}{7}\approx$0.714 $\frac {7}{20}= $0.35 $\frac {7}{8}= $0.875

答案： 0.167 0.8 2.75 1.667
1.5 0.714 0.35 0.875

3. 把下面各小数化成分数。
$0.7=$$\frac {7}{10}$ $0.07=$$\frac {7}{100}$ $0.567=$$\frac {567}{1000}$ $1.25=$$1\frac {1}{4}$
$1.3=$$1\frac {3}{10}$ $7.5=$$7\frac {1}{2}$ $0.45=$$\frac {9}{20}$ $10.7=$$10\frac {7}{10}$

答案： $\frac {7}{10}$ $\frac {7}{100}$ $\frac {567}{1000}$ $1\frac {1}{4}$
$1\frac {3}{10}$ $7\frac {1}{2}$ $\frac {9}{20}$ $10\frac {7}{10}$