75x23+26x23-23=? 97+25+75+203=？ 102x65=？ 简便计算 该加括号加括号
答案:3 悬赏:80 手机版
解决时间 2021-11-15 14:28
- 提问者网友：放下
- 2021-11-15 05:44
75x23+26x23-23=? 97+25+75+203=？ 102x65=？ 简便计算 该加括号加括号
最佳答案
- 五星知识达人网友：刀戟声无边
- 2021-11-15 07:16
75x23+26x23-23
=（75+26-1）x23
=（75+25）x23
=100x23
=2300
97+25+75+203
=(97+203)+(25+75)
=300+100
=400
102x65
=(100+2)x65
=100x65+2x65
=6500+130
=6630
=（75+26-1）x23
=（75+25）x23
=100x23
=2300
97+25+75+203
=(97+203)+(25+75)
=300+100
=400
102x65
=(100+2)x65
=100x65+2x65
=6500+130
=6630
全部回答
- 1楼网友：笑迎怀羞
- 2021-11-15 09:03
75x23+26x23-23
=23*(75+26-1)
=23*100
=2300
97+25+75+203
=(97+203)+(25+75)
=300+100
=400
102x65
=(100+2)*65
=100*65+2*65
=6500+130
=6630
=23*(75+26-1)
=23*100
=2300
97+25+75+203
=(97+203)+(25+75)
=300+100
=400
102x65
=(100+2)*65
=100*65+2*65
=6500+130
=6630
- 2楼网友：平生事
- 2021-11-15 07:52
75x23+26x23-23
=75x23+25x23+23-23
=(75+25)x23
=2300
97+25+75+203
=97+203+25+75
=300+100=400
102x65=(100+2)*65=6500+130=6630
=75x23+25x23+23-23
=(75+25)x23
=2300
97+25+75+203
=97+203+25+75
=300+100=400
102x65=(100+2)*65=6500+130=6630
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