问题
解答题
利用你喜欢的方法计算下列各题.
125×32×25
156+133+44+267
56×99+56
73×42+42×27
10000÷8÷125
589-256-144.
答案
(1)125×32×25
=125×(4×8)×25
=(125×8)×(4×25)
=1000×100
=100000;
(2)156+133+44+267
=(156+44)+(133+267)
=200+400
=600;
(3)56×99+56
=56×(99+1)
=56×100
=5600;
(4)73×42+42×27
=(73+27)×42
=100×42
=4200;
(5)10000÷8÷125
=10000÷(8×125)
=10000÷1000
=10;
(6)589-256-144
=589-(256+144)
=589-400
=189.