99x85用简便计算怎么写用最简便的方法计算99*

2025-03-14 08:05:05
推荐回答(1个)
回答1:

99×85
=(100-1)×85
=100×85-85
=8500-85
=8415
比较简单的算法就是:
99X83
=(100-1)X83
=100X83-83X1

=8300-83
=8217
希望我的回答能对你有所帮助。
99×85
=(100-1)×85
=100×85-1×85
=8500-85
=8415
99x85用简便计算怎么写 - : 99x85=(100-1)*85=100*85-1*85=8500-85=8415满意请点击右下角的采纳答案,谢谢

99x85最简便的方法怎么算 - : 止567657357527

99x85脱式简便计算怎么写: 99x85 =(100-1)x85 =100x85-85 =8500-85 =8415

99x85+85怎样做比较简便 - : 99*85+85=(99+1)*85=100*85=8500

99x85x85能怎样简便运算呢 - : 尾数是5的数的平方,结果的十位和个位都是25,百位以上的方法是: 比如15*15,最后两位都25,百位数以上就是1*(1+1)=2,即225 25*25,百位数以上就是2*(2+1)=6,即625 同理:35*35百位数以上就是3*(3+1)即1225 45*45百位数以上就是4*(4+1)即2025 所以本题可如此转换:(100-1)*(85*85)=(100-1)*7225=722500-7225=715275

求简便计算99x85十85 - : 99*85+85 原式=85(99+1) =85*100 =8500

85加99乘85用简便方法计算 怎么做 - : 85+99X85=1X85+99X85=100X85=8500

筒便运算99x85+78 - : 我..知..道 加..我..私..聊

85加99乘85用简便方法计算 怎么做 - : 85+99*85=85*(1+99)=85*100=8500

筒便运算99x85+78 - : 99*85+78=(100-1)*85+78=8493

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