6.48+3.52/0.4的简便方法？
3个回答
展开全部
6.48+3.52÷0.4
=6.48+3.52÷（2/5）
=6.48+3.52×5/2
=6.48+3.52×2.5
=6.48+3.52×1+3.52×1.5
=（6.48+3.52）+1.76×2×1.5
=10+1.76×3
=10+5.28
=15.28
=6.48+3.52÷（2/5）
=6.48+3.52×5/2
=6.48+3.52×2.5
=6.48+3.52×1+3.52×1.5
=（6.48+3.52）+1.76×2×1.5
=10+1.76×3
=10+5.28
=15.28
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展开全部
=6.48+3.52÷（2/5）
=6.48+3.52×5/2
=6.48+3.52×2.5
=6.48+3.52×1+3.52×1.5
=（6.48+3.52）+1.76×2×1.5
=10+1.76×3
=10+5.28
=15.28
=6.48+3.52×5/2
=6.48+3.52×2.5
=6.48+3.52×1+3.52×1.5
=（6.48+3.52）+1.76×2×1.5
=10+1.76×3
=10+5.28
=15.28
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展开全部
=6.48+3.52÷（2/5）
=6.48+3.52×5/2
=6.48+3.52×2.5
=6.48+3.52×1+3.52×1.5
=（6.48+3.52）+1.76×2×1.5
=10+1.76×3
=10+5.28
=15.28
=6.48+3.52×5/2
=6.48+3.52×2.5
=6.48+3.52×1+3.52×1.5
=（6.48+3.52）+1.76×2×1.5
=10+1.76×3
=10+5.28
=15.28
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评论
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你对这个回答的评价是？
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