如题所述
538-(149-121)=538-28=510
温馨提示:答案为网友推荐,仅供参考
第1个回答 2021-07-13
538-(149-121)怎么巧算?
538-(149-121)
巧算方法如下:
538-(149-121)
=538+121-149
=659-149
=510
538-(149-121)
巧算方法如下:
538-(149-121)
=538+121-149
=659-149
=510