(10.7+7.2\2.4)*0.3 简便计算
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![(10.7+7.2\2.4)*0.3 简便计算](/uploads/image/z/1994080-40-0.jpg?t=%EF%BC%8810.7%2B7.2%5C2.4%EF%BC%89%2A0.3+%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97)
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(10.7+7.2\2.4)*0.3 简便计算
(10.7+7.2\2.4)*0.3 简便计算
(10.7+7.2\2.4)*0.3 简便计算
先算7.2/2.4=3 ,再算10.7+3=13.7再在里面加个0.3构成14*0.3-0.3*0.3=4.2-0.09=4.11