46.52 12.98咋简便算
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/11 09:17:00
=(100-1)×46=100×46-1×46=46-46=4554
(100-2)X35=100X35-2X35=3500-70=3430
=902-(100-2)=902-100+2=802+2=804
98+303=(100-2)+(300+3)=(100+300)+(3-2)=400+1=401
98×(100-1)=98×100-98×1=9800-98=9702
99x98=(100-1)x98=100x98-1x98=9800-98=9702
原式=345*(100-2)=345*100-345*2=34500-690=33810
18*98=18*(100-2)=1800-36=1764
35*98=35*(100-2)=35*100-35*2=3500-70=3430
98×0.36=100×0.36-2×0.36=36-0.0.72=35.28
9*99+98=9*99+99-1=(9+1)*99-1=990-1=989
0.45×98=0.45X(100-2)=45-0.9=44.1再问:对吗
125*48=125*8*6=1000*6=6000
65×98=65×﹙100-2﹚=6500-130=6370
98.99+98=98.99+(100-2)=198.99-2=196.99
13×98=13×(100-2)=13×100-13×2=1300-26=1274如果明白,并且解决了你的问题,请及时采纳为最佳答案!O(∩_∩)O
如果能爱下去:35÷0.25被除数和除数各乘以4得:(35×4)÷(0.25×4)=140÷1=140祝好,再见.
75×98=75×(100-2)=75×100-75×2=7350