如题所述
第1个回答 2012-10-30
218x730+7820x73
=2180×73+7820×73
=(2180+7820)×73
=10000×73
=730000
和99999x7+11111x37
=11111x63+11111x37
=11111x(63+37)
=11111x100
=1111100本回答被提问者采纳
=2180×73+7820×73
=(2180+7820)×73
=10000×73
=730000
和99999x7+11111x37
=11111x63+11111x37
=11111x(63+37)
=11111x100
=1111100本回答被提问者采纳