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.