54.68-27.75+19.84的简便计算、
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![54.68-27.75+19.84的简便计算、](/uploads/image/z/49283-35-3.jpg?t=54.68-27.75%2B19.84%E7%9A%84%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97%E3%80%81)
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54.68-27.75+19.84的简便计算、
54.68-27.75+19.84的简便计算、
54.68-27.75+19.84的简便计算、
54.68-27.75+19.84
=54+0.68-(28-0.25)+(20-0.16)
=(54-28+20)+(0.68+0.25-0.16)
=46+0.77
=46.77
(54-27+19)+(0.68+0.84-0.75)=46.77