7.5*2.3+1.9*2.5(简算)
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解决时间 2021-02-23 13:58
- 提问者网友：欺烟
- 2021-02-23 01:24
7.5*2.3+1.9*2.5(简算)
最佳答案
- 五星知识达人网友：何以畏孤独
- 2021-02-23 02:39
7.5*(1.9+0.4)+1.9*2.5
=7.5*1.9+7.5*0.4+1.9*2.5
=1.9*(7.5+2.5)+3
=19+3
=22
=7.5*1.9+7.5*0.4+1.9*2.5
=1.9*(7.5+2.5)+3
=19+3
=22
全部回答
- 1楼网友：孤独入客枕
- 2021-02-23 03:24
7.5*2.3+1.9*2.5
=2.5*3*2.3+1.9*2.5
=2.5*6.9+1.9*2.5
=2.5*(6.9+1.9)
=2.5*8.8
=2.5*4*2.2
=10*2.2
22
=2.5*3*2.3+1.9*2.5
=2.5*6.9+1.9*2.5
=2.5*(6.9+1.9)
=2.5*8.8
=2.5*4*2.2
=10*2.2
22
- 2楼网友：末日狂欢
- 2021-02-23 03:17
7.5×2.3+1.9×2.5
＝2.5×3×2.3+1.9×2.5
＝2.5×6.9+1.9×2.5
＝2.5×8.8
＝2.5×4×2.2
＝10×2.2
＝22
＝2.5×3×2.3+1.9×2.5
＝2.5×6.9+1.9×2.5
＝2.5×8.8
＝2.5×4×2.2
＝10×2.2
＝22
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