53*79+53怎么简便
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![53*79+53怎么简便](/uploads/image/z/131479-7-9.jpg?t=53%2A79%2B53%E6%80%8E%E4%B9%88%E7%AE%80%E4%BE%BF)
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53*79+53怎么简便
53*79+53怎么简便
53*79+53怎么简便
53*79+53
=53*(79+1)
=53*80
=4240
53×79+1×53=(1+79)×53=80×53=4240
53*(79+1)
53×79+53
=53×79+53×1
=53×(79+1)
=53×80
=4240