54*99+34怎么简算54*99+34怎么简算
问题描述:
54*99+34怎么简算54*99+34怎么简算
答
54*(100-1)+34=5400-54+34=5400-(54-34)=5400-20=5380
54*99+34怎么简算54*99+34怎么简算
54*(100-1)+34=5400-54+34=5400-(54-34)=5400-20=5380