54*99+99用简便运算
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/01 06:40:38
![54*99+99用简便运算](/uploads/image/z/101400-24-0.jpg?t=54%2A99%2B99%E7%94%A8%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97)
54*99+99用简便运算
54*99+99用简便运算
54*99+99用简便运算
54*99+99=54*(100-1)+99=54*100-54+99=5400+45=5445
=54*(99+1)=54*100=5400
54*99+99=55*99=55*(100-1)=5500-55=5445
1楼SB
99X(54+1)=(100-1)55=5500-55=5445
54*99+99=
99(54+1)=99*55=(100-1)*55=5500-55=5445
54*99+99
=54*(100 -1)+99
=54* 100 -54 +99
=5400 + 45
= 5445