45×65+45+43×65+66×12简便计算?
3个回答
展开全部
45×65+45+43×65+66×12
=45×(65+1)+43×65+66×12
=45×66+66×12+43×(66-1)
=57×66+43×66-43
=(57+43)×66-43
=100×66-43
=6600-43
=6557
=45×(65+1)+43×65+66×12
=45×66+66×12+43×(66-1)
=57×66+43×66-43
=(57+43)×66-43
=100×66-43
=6600-43
=6557
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
45×65+45+43×65+66×12
=45×(65+1)+43×65+66×12
=45×66+12×66+43×65
=(45+12)×66+43×(66-1)
=57×66+43×66-43
=(57+43)×66-43
=100×66-43
=6600-43
=6557
=45×(65+1)+43×65+66×12
=45×66+12×66+43×65
=(45+12)×66+43×(66-1)
=57×66+43×66-43
=(57+43)×66-43
=100×66-43
=6600-43
=6557
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
45×65+45+43x65+66x12
=45×(65+1)+43×65+66x12
=(45+12)x66+43×65
=57x66+43×65
=(57+43)x65+57
=6500+57
=6557
=45×(65+1)+43×65+66x12
=(45+12)x66+43×65
=57x66+43×65
=(57+43)x65+57
=6500+57
=6557
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询