《2025年一本计算题满分训练七年级数学全一册人教版》

1.计算:
(1)$0.5×(-0.125)×(-\frac {5}{3})×12;$
(2)$2\frac {1}{4}×(-1\frac {3}{4})×(-\frac {2}{3})×(-\frac {8}{7});$
(3)$(-3\frac {1}{3})×(-0.12)×(-2\frac {1}{4})×33\frac {1}{3};$
(4)$\frac {1}{2}×|-\frac {2}{3}|×2\frac {1}{4}×(-5\frac {1}{3}).$

答案： 1.
(1)$\frac{5}{4}$
(2)-3
(3)-30
(4)-4

2.用简便算法计算下列各题:
(1)$(-56)×(\frac {4}{7}-\frac {3}{8}+\frac {1}{14});$
(2)【易错】$(-4)×(-\frac {5}{6}-\frac {1}{5}+1\frac {1}{4}-\frac {11}{12})×15;$
(3)$(\frac {7}{9}-\frac {5}{6}+\frac {7}{18})×36-6×1.45+3.95×6;$
(4)$325×(-125)×(-11)×8×\frac {1}{25}×(-\frac {5}{11}).$

答案： 2.
(1)-15
(2)42
(3)27
(4)-65000

3.计算:
(1)$(-1\frac {1}{2})×(-1\frac {1}{3})×(-1\frac {1}{4})×(-1\frac {1}{5})-(-1\frac {1}{6})×(-1\frac {1}{7});$
(2)$(1-\frac {1}{2})×(1+\frac {1}{2})×(1-\frac {1}{3})×(1+\frac {1}{3})×(1-\frac {1}{4})×(1+\frac {1}{4}).$

答案： 3.
(1)$\frac{5}{3}$
(2)$\frac{5}{8}$