53,5*35,3+53,3*43,2+78,5*46,5 简便算法 中间的逗号是点
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53,5*35,3+53,3*43,2+78,5*46,5 简便算法 中间的逗号是点
![53,5*35,3+53,3*43,2+78,5*46,5 简便算法 中间的逗号是点](/uploads/image/z/9458757-45-7.jpg?t=53%2C5%2A35%2C3%2B53%2C3%2A43%2C2%2B78%2C5%2A46%2C5+%E7%AE%80%E4%BE%BF%E7%AE%97%E6%B3%95+%E4%B8%AD%E9%97%B4%E7%9A%84%E9%80%97%E5%8F%B7%E6%98%AF%E7%82%B9)
53.5*35.3+53.3*43.2+78.5*46.5
=53.5*35.3+(53.5-0.2)*43.2+78.5*46.5
=53.5*(35.3+43.2)-0.2*43.2+78.5*46.5
=53.5*78.5+78.5*46.5-0.2*43.2
=78.5*100-8.64
=7850-8.64
=7841.56
=53.5*35.3+(53.5-0.2)*43.2+78.5*46.5
=53.5*(35.3+43.2)-0.2*43.2+78.5*46.5
=53.5*78.5+78.5*46.5-0.2*43.2
=78.5*100-8.64
=7850-8.64
=7841.56
53,5*35,3+53,3*43,2+78,5*46,5 简便算法 中间的逗号是点
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