问题 解答题

利用你发现的规律,计算下面各题.

88×33+12×33

125×4×25×8

2009+2009×99

58+39+42+61

264+56+36

125×88.

答案

(1)88×33+12×33,

=(88+12)×33,

=100×33,

=3300;

(2)125×4×25×8,

=(125×8)×(4×25),

=1000×100,

=100000;

(3)2009+2009×99,

=209×(1+99),

=209×100,

=20900;

(4)58+39+42+61,

=(58+42)+(39+61),

=100+100,

=200;

(5)264+56+36,

=(264+36)+56,

=300+56,

=356;

(6)125×88,

=125×8×11,

=(125×8)×11,

=1000×11,

=11000.

单项选择题 A1型题
单项选择题 A3/A4型题