4.4*28.6+41.6*5.6 简便计算

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4.4*28.6+41.6*5.6 简便计算
4.4*28.6+41.6*5.6 简便计算

4.4*28.6+41.6*5.6 简便计算
原式=4.4*5.6+4.4*23+41.6*5.6
=46*5.6+4.4*23
=23*5.6+23*5.6+4.4*23
=23*(5.6+4.4)+23*5.6
=23*10+23*5.6
=230+128.8
=358.8

4.4*28.6+41.6*5.6
=4.4*28.6+(28.6+13)*5.6
=(4.4+5.6)*28.6+13*5.6
=286+72.8
=358.8