996×25 (125×99+125)×16 36×68-68+68×25求简便方法啊 求过程 求得数
问题描述:
996×25 (125×99+125)×16 36×68-68+68×25
求简便方法啊 求过程 求得数
答
996×25
=(1000-4)×25
=1000×25-4×25
=25000-100
=24900
(125×99+125)×16
=125×(99+1)×16
=(125×16)×100
=2000×100
=200000
36×68-68+68×25
=(36-1+25)×68
=60×68
=4080