0.33*1.4+0.11*5.8用简便方法算
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0.33*1.4+0.11*5.8用简便方法算
用简便方法算0.33*1.4+0.11*5.8
用简便方法算0.33*1.4+0.11*5.8
=0.11*3*1.4+0.11*5.8
=0.11*4.2+0.11*5.8
=0.11*(4.2+5.8)
=0.11*10
=1.1
=0.11*4.2+0.11*5.8
=0.11*(4.2+5.8)
=0.11*10
=1.1