☆ 47.3×8.4+1.6×49.8
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解决时间 2021-02-06 06:48
- 提问者网友:川水往事
- 2021-02-05 11:29
☆ 47.3×8.4+1.6×49.8
最佳答案
- 五星知识达人网友:廢物販賣機
- 2021-02-05 11:54
47.3×8.4+1.6×49.8
=47.3×8.4+1.6×(47.3+2.5)
=47.3×8.4+1.6×47.3+1.6×2.5
=47.3×(8.4+1.6)+2.5×4×0.4
=47.3×10+10×0.4
=(47.3+0.4)×10
=47.7×10
=477
=47.3×8.4+1.6×(47.3+2.5)
=47.3×8.4+1.6×47.3+1.6×2.5
=47.3×(8.4+1.6)+2.5×4×0.4
=47.3×10+10×0.4
=(47.3+0.4)×10
=47.7×10
=477
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