数学练习题/运算顺序/分数

请仔细做题；百分比以绝对值的形式计算，而不是相对值。例如：x+10%=x+0.1，而不是x+10%*x=1.1x

1

${\frac {2}{3}}+{\frac {5}{6}}-{\frac {1}{2}}=$

2

${\frac {3}{5}}\times {\frac {2}{3}}+{\frac {5}{12}}=$

3

$({\frac {7}{15}}+{\frac {2}{3}})-{\frac {7}{9}}=$

4

$2{\tfrac {2}{3}}\div {\frac {4}{5}}+1{\tfrac {4}{5}}=$

5

$3{\frac {1}{5}}\div ({\frac {3}{5}}+{\frac {1}{2}})=$

6

$(2{\tfrac {5}{8}}+1{\tfrac {5}{12}})\times ({\frac {5}{6}}-{\frac {1}{2}})=$

7

$(1{\tfrac {2}{3}}+2{\tfrac {1}{6}})\div 11{\tfrac {1}{2}}=$

8

$5{\tfrac {3}{5}}\div 3{\tfrac {1}{2}}\times 2{\tfrac {2}{3}}=$

9

$4{\tfrac {3}{7}}+5{\tfrac {5}{14}}-3{\tfrac {10}{21}}=$

10

$3{\tfrac {5}{8}}\times {\frac {3}{58}}+3{\tfrac {3}{8}}=$

11

${\frac {5}{6}}+2{\tfrac {2}{5}}\times {\frac {8}{9}}-1{\tfrac {5}{6}}=$

12

$(2{\tfrac {4}{5}}-{\frac {7}{10}})\div 2{\tfrac {4}{5}}=$

13

$[{\frac {3}{5}}+({\frac {7}{10}}+{\frac {9}{20}})]-2.75=$

14

$675\%-4{\tfrac {7}{30}}+2.5=$

15

$5.3+3{\tfrac {3}{5}}\times 2{\tfrac {8}{11}}-245\%=$

16

$34.2\times 24.25+7,462.5=$

17

18

$44.62-1,425\%+47.6\div 0.7=$

19

${\frac {13}{25}}+[3{\tfrac {3}{20}}\div 4{\tfrac {1}{2}}-({\frac {4}{7}}+435\%)]=$

20

$(3.4-36\%)\times 6{\tfrac {2}{3}}+(3{\tfrac {3}{8}}-2{\tfrac {7}{12}})=$

21

$(4{\tfrac {9}{10}}\div {\frac {7}{15}}\times 1{\tfrac {3}{5}})+190\%=$

22

$10\%\times 8{\tfrac {9}{10}}+4{\tfrac {1}{10}}=$

23

${\sqrt {{\frac {6}{25}}+{\frac {2}{5}}}}+{\frac {7}{10}}\times 1{\tfrac {3}{25}}=$

24

${\sqrt[{3}]{\frac {5^{3}}{6^{3}}}}-{\frac {1}{2}}+560\%=$

25

$43.2-13.6+47.3\times 34.2=$

26

$[(6{\tfrac {1}{2}}-3{\tfrac {3}{4}})\div {\frac {14}{15}}]+5{\tfrac {5}{8}}=$

27

$3{\tfrac {1}{2}}\div 1{\tfrac {2}{5}}+{\frac {9}{10}}\times 2{\tfrac {2}{5}}-75\%=$

28

$[(3{\tfrac {4}{15}}+2{\tfrac {3}{5}})\times ({\frac {5}{6}}+{\frac {1}{3}})]=$

29

$6{\tfrac {5}{7}}\times {\frac {5}{94}}+3{\tfrac {2}{5}}\div {\frac {2}{15}}=$

30

$[({\frac {1}{2}}\times {\frac {3}{4}}+{\frac {4}{5}}\times {\frac {5}{6}})]-{\frac {1}{2}}+245\%=$