68乘以49加49用简便方法计算
第1个回答 2016-11-15
解答如下：
简便运算过程如下
68X49+49
=（68+1）X49
=69X49
=3381
简便运算过程如下
68X49+49
=（68+1）X49
=69X49
=3381
第2个回答 2016-11-15
68乘以49加49
=(68+1)x49
=69x(50-1)
=69x50-69
=3450-69
=3381本回答被网友采纳
=(68+1)x49
=69x(50-1)
=69x50-69
=3450-69
=3381本回答被网友采纳
第3个回答 2016-11-15
68x49+49
=（68+1）x49
=69x49
=69x（50-1）
=69x50-69x1
=3450-69
=3381
谢谢，请采纳
=（68+1）x49
=69x49
=69x（50-1）
=69x50-69x1
=3450-69
=3381
谢谢，请采纳
第4个回答 2016-11-15
68*49+49=（68+1）*49=69*（50-1）=69*50-69=3381
第5个回答 2016-11-15
68x49+49
=（68+1）x49
=69x49
=（70-1）x（50-1）
=70x50-70x1-1x50+1x1
=3500-70-50+1
=3381
望采纳
=（68+1）x49
=69x49
=（70-1）x（50-1）
=70x50-70x1-1x50+1x1
=3500-70-50+1
=3381
望采纳
