用简便方法计算:2.56乘以15+14.4乘以1.5-0.3乘以150

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用简便方法计算:2.56乘以15+14.4乘以1.5-0.3乘以150用简便方法计算:2.56乘以15+14.4乘以1.5-0.3乘以150用简便方法计算:2.56乘以15+14.4乘以1.5-0.3

用简便方法计算:2.56乘以15+14.4乘以1.5-0.3乘以150
用简便方法计算:2.56乘以15+14.4乘以1.5-0.3乘以150

用简便方法计算:2.56乘以15+14.4乘以1.5-0.3乘以150
2.56×15+14.4×1.5-0.3×150
= 2.56×15+1.44×1.5-3×15……变一变,就简便.
=15×(2.56+1.44-3)
=15×1
=15