927-(37-254)-154
=927-37+254-154
=890+(254-154)
=890+100
=990
望采纳,谢谢
990
请采纳谢谢
简便计算过程如下
927-(37-254)-154
=927-37+254-154
=927-(27+10)+(254-154)
=927-27-10+100
=(927-27)+(100-10)
=900+90
=990
望采纳
观察尾数,相同的先减。
927-(37-254)-154
=927-37+254-154
=(927-27)+(254-154)-10
=900+100-10
=990
解:简便运算如下:
927-(37-254)-154
=927-37+254-154
=(927-27)-10+(254-154)
=900-100-10
=800-10
=790