用简便方法计算:(0.14+0.14+0.14+0.14)*2.5 各位帅哥、美女教我做做

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用简便方法计算:(0.14+0.14+0.14+0.14)*2.5 各位帅哥、美女教我做做
用简便方法计算:(0.14+0.14+0.14+0.14)*2.5 各位帅哥、美女教我做做

用简便方法计算:(0.14+0.14+0.14+0.14)*2.5 各位帅哥、美女教我做做
(0.14+0.14+0.14+0.14)*2.5
=0.14*4*2.5
=0.14*10
=1.4