68乘以49加49用简便方法计算
答案:6 悬赏:20 手机版
解决时间 2021-04-17 16:57
- 提问者网友：感性作祟
- 2021-04-17 10:26
68乘以49加49用简便方法计算
最佳答案
- 五星知识达人网友：躲不过心动
- 2021-04-17 11:39
68乘以49加49
=(68+1)x49
=69x(50-1)
=69x50-69
=3450-69
=3381
=(68+1)x49
=69x(50-1)
=69x50-69
=3450-69
=3381
全部回答
- 1楼网友：渡鹤影
- 2021-04-17 15:57
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
- 2楼网友：持酒劝斜阳
- 2021-04-17 14:22
68×49＋49＝49×（68＋1）
＝3381
- 3楼网友：孤老序
- 2021-04-17 13:51
68x49+49
=49x(68+1)
=49x69
=(50-1)x69
=50x69-69
=50x(70-1)-69
=50x70-50-69
=3500-50-69
=3381
=49x(68+1)
=49x69
=(50-1)x69
=50x69-69
=50x(70-1)-69
=50x70-50-69
=3500-50-69
=3381
- 4楼网友：七十二街
- 2021-04-17 13:35
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
- 5楼网友：冷風如刀
- 2021-04-17 12:57
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
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