3.4乘以9+99乘以0.6怎么简便计算
答案:4 悬赏:30 手机版
解决时间 2021-11-14 20:03
- 提问者网友:一抹荒凉废墟
- 2021-11-14 15:00
3.4乘以9+99乘以0.6怎么简便计算
最佳答案
- 五星知识达人网友:等灯
- 2021-11-14 15:19
3.4×9+99×0.6
=3.4×(10-1)+(100-1)×0.6
=34-3.4+60-0.6
=(34+60)-(3.4+0.6)
=94-4
=90
3.4×9+99×0.6
=3.4×9+(90+9)×0.6
=3.4×9+90×0.6+9×0.6
=3.4×9+9×0.6+90×0.6
=(3.4+0.6)×9+54
=4×9+54
=36+54
=90
=3.4×(10-1)+(100-1)×0.6
=34-3.4+60-0.6
=(34+60)-(3.4+0.6)
=94-4
=90
3.4×9+99×0.6
=3.4×9+(90+9)×0.6
=3.4×9+90×0.6+9×0.6
=3.4×9+9×0.6+90×0.6
=(3.4+0.6)×9+54
=4×9+54
=36+54
=90
全部回答
- 1楼网友:青灯有味
- 2021-11-14 17:20
3.4x9+99x0.6
=3.4x9+9x11x0.6
=9x(3.4+6.6)
=9x10
=90
=3.4x9+9x11x0.6
=9x(3.4+6.6)
=9x10
=90
- 2楼网友:拜訪者
- 2021-11-14 16:45
3.4*99+99*0.6
=3.4*99+0.6*99
=(3.4+0.6)*99
=4*99
=4*(100-1)
=400-4
=396
=3.4*99+0.6*99
=(3.4+0.6)*99
=4*99
=4*(100-1)
=400-4
=396
- 3楼网友:廢物販賣機
- 2021-11-14 15:31
3.4*9+99*0.6=3.4*9+9*11*0.6=9*(3.4+11*0.6)=9*(3.4+6.6)=9*10=90
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