7.3乘以8.2加上0.2乘以2.7的简便方法怎么做?
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7.3*8.2+0.2*2.7=7.3*(8+0.2)+0.54=7.3*8+7.3*0.2+0.54=58.4+1.46+0.54=58.4+2=60.4,谢谢采纳哈!
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解:7.3×8.2+0.2×2.7
=7.3×(8+0.2)+0.2×2.7
=7.3×8+7.3×0.2+0.2×2.7
=7.3×8+0.2×(7.3+2.7)
=7.3×8+0.2×10
=58.4+2
=60.4
=7.3×(8+0.2)+0.2×2.7
=7.3×8+7.3×0.2+0.2×2.7
=7.3×8+0.2×(7.3+2.7)
=7.3×8+0.2×10
=58.4+2
=60.4
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7.3×8.2+0.2×2.7
=7.3×(8+0.2)+0.2×2.7
=7.3×8+0.2×(7.3+2.7)
=58.4+0.2×10
=60.4
=7.3×(8+0.2)+0.2×2.7
=7.3×8+0.2×(7.3+2.7)
=58.4+0.2×10
=60.4
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7.3×8.2+0.2×2.7
=(10-2.7)×8.2+0.2×2.7
=82-2.7×8.2+0.2×2.7
=82-2.7×(8.2-0.2)
=82-2.7×8
=82-(3-0.3)×8
=82-24+2.4
=60.4
=(10-2.7)×8.2+0.2×2.7
=82-2.7×8.2+0.2×2.7
=82-2.7×(8.2-0.2)
=82-2.7×8
=82-(3-0.3)×8
=82-24+2.4
=60.4
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