怎样简便计算3.6*14.4+9.3*32+3.21*36

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怎样简便计算3.6*14.4+9.3*32+3.21*36
怎样简便计算3.6*14.4+9.3*32+3.21*36

怎样简便计算3.6*14.4+9.3*32+3.21*36
3.6*14.4+9.3*32+3.21*36
=3.6*14.4+32.1*3.6+9.3*32
=3.6*(14.4+32.1)+9.3*32
=3.6*46.5+9.3*32
=3.6*5*9.3+9.3*32
=9.3*(18+32)
=9.3*50
=465

3.6*14.4+9.3*32+3.21*36
=3.6(14.4+32.1)+9.3*32
=3.6*46.5+9.3*32
=3.6*9.3*5+9.3*32
=9.3(3.6*5+32)
=9.3(18+32)
=9.3*50
=465