86×6.7-67.1的简便方法
答案:2 悬赏:10 手机版
解决时间 2021-04-07 20:58
- 提问者网友：皆是孤独
- 2021-04-07 00:16
86×6.7-67.1的简便方法
最佳答案
- 五星知识达人网友：鸠书
- 2021-04-07 01:03
简便运算：
86×6.7-67.1
=86×6.7-67-0.1
=86×6.7-6.7×10-0.1
=6.7×（86-10）-0.1
=6.7×76-0.1
=509.2-0.1
=509.1
答题不易，望采纳~~
86×6.7-67.1
=86×6.7-67-0.1
=86×6.7-6.7×10-0.1
=6.7×（86-10）-0.1
=6.7×76-0.1
=509.2-0.1
=509.1
答题不易，望采纳~~
全部回答
- 1楼网友：酒者煙囻
- 2021-04-07 02:01
86×6.7-67.1
=86×6.7-（67+0.1）
=86×6.7-6.7x10-0.1
=6.7x（86-10）-0.1
=6.7x76-0.1
=（7-0.3）（80-4）-0.1
=560-28-24+1.2-0.1
=508+1.1
=509.1
=86×6.7-（67+0.1）
=86×6.7-6.7x10-0.1
=6.7x（86-10）-0.1
=6.7x76-0.1
=（7-0.3）（80-4）-0.1
=560-28-24+1.2-0.1
=508+1.1
=509.1
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