0.27×4+0.28×6+0.05×2+0.22×3+0.18×3简便
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0.27×4+0.28×6+0.05×2+0.22×3+0.18×3=4.06
咨询记录 · 回答于2023-04-16
0.27×4+0.28×6+0.05×2+0.22×3+0.18×3简便
0.27×4+0.28×6+0.05×2+0.22×3+0.18×3=4.06
怎么算呢
步骤
0.27×4+0.28×6+0.05×2+0.22×3+0.18×3=3✘(0.28✘2+0.22+0.18)+2✘(0.27✘2+0.05)=3✘(0.56+0.22+0.18)+2✘(0.54+0.05)=3✘0.96+2✘0.59=2.88+1.18=4.06