查人人中国名人网泰勒斯哲学:简便计算
来源：百度文库 编辑：查人人中国名人网 时间：2024/05/06 04:49:12
1997*19981998-1998*19971997
1999+999*999
1999+999*999
1997*19981998-1998*19971997
=1997*1998*1001001-1998*1997*1001001
=0
1999+999*999
=1000+999+999*999
=1000+1000*999
=1000+999000
=1000000
1997*19981998-1998*19971997
=1997*1998*10001-1998*1997*10001
=0
1999+999*999
=999*2+999*999+1
=999*1001*1
=1000*1000-1+1
=1000000
1997*19981998-1998*19971997
=1997*1998*1001001-1998*1997*1001001
=0
1999+999*999
=1000+999+999*999
=1000+1000*999
=1000+999000
=1000000