99999*77778+33333+66666 (要简便算法)

问题描述：

答

99999*77778+33333+66666
=99999*(77778+1)
=99999*77779
=(100000-1)*77779
=7777900000-77779
=7777822221

答

（77779-1）*99999+33333+66666=77779*99999=（100000-1）*77779=777790-77779=777790-80000+1=697791

答

99999*77778+33333*66666
=99999*77778+33333*3*22222
=99999*(77778+22222)
=99999*100000
=9999900000

答

应该是99999*77778+33333*66666
=99999*77778+33333*3*22222
=99999*77778+99999*22222
=99999*（77778+22222)
=99999*100000
=9999900000

答

99999×77778+33333×66666
=99999×77778+99999×22222
=99999×(77778+22222)
=99999×100000
=9999900000