3.6乘以2.4+1.8乘以5.6的简便算法？
2个回答
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计算如下：
3.6乘以2.4+1.8乘以5.6
=3.6×2.4+1.8×5.6
=3.6×2.4+3.6×2.8
=3.6×(2.4+2.8)
=3.6×5.2
=3.6×5+3.6×0.2
=36/2+0.72
=18+0.72
=18.72
3.6乘以2.4+1.8乘以5.6
=3.6×2.4+1.8×5.6
=3.6×2.4+3.6×2.8
=3.6×(2.4+2.8)
=3.6×5.2
=3.6×5+3.6×0.2
=36/2+0.72
=18+0.72
=18.72
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简便算法如下：
3.6*2.4+1.8*5.6
=3.6*2.4+1.8*2*2.8
=3.6*（2.4+2.8）
=3.6*（10-4.8）
=3.6*10-3.6*5+3.6*0.2
=36-18+0.72
=18.72
3.6*2.4+1.8*5.6
=3.6*2.4+1.8*2*2.8
=3.6*（2.4+2.8）
=3.6*（10-4.8）
=3.6*10-3.6*5+3.6*0.2
=36-18+0.72
=18.72
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