19.98*37-199.8*1.9+1998*0.82的简便运算
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![19.98*37-199.8*1.9+1998*0.82的简便运算](/uploads/image/z/49284-36-4.jpg?t=19.98%2A37-199.8%2A1.9%2B1998%2A0.82%E7%9A%84%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97)
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19.98*37-199.8*1.9+1998*0.82的简便运算
19.98*37-199.8*1.9+1998*0.82的简便运算
19.98*37-199.8*1.9+1998*0.82的简便运算
19.98*37-199.8*1.9+1998*0.82
==19.98*37-19.98*19+19.98*82
==19.98*(37-19+82)
==19.98*100
==1998