问题 解答题
简算下列各题
548+468+529.14-1.34-4.5777+2.7+2.3+23
3200÷4÷25125×32×252009×95+5×2009.
答案

(1)548+468+52

=(548+52)+468,

=600+468,

=1068;

(2)9.14-1.43-4.57

=9.14-(1.43+4.57),

=9.14-6,

=3.14;

(3)77+2.7+2.3+23

=(77+23)+(2.7+2.3),

=100+5,

=105;

(4)3200÷4÷25

=3200÷(4×25),

=3200÷100,

=32;

(5)125×32×25

=(125×8)×(4×25),

=1000×100,

=100000;

(6)2009×95+5×2009

=2009×(95+5),

=2009×100,

=200900.

单项选择题
单项选择题