计算:0.65+(-1.9)+(-0.1)+(-0.65)
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计算:0.65+(-1.9)+(-0.1)+(-0.65)
计算:0.65+(-1.9)+(-0.1)+(-0.65)
计算:0.65+(-1.9)+(-0.1)+(-0.65)
原式=0.65-1.9-0.1-0.65
=﹙0.65-0.65)-﹙1.9+0.1)
=﹣2.
答案是-2.。。。这不是有理数加减法吗??
0.65+(-1.9)+(-0.1)+(-0.65)
=(0.65-0.65)-(1.9+0.1)
=0-2
= -2
0.65+(-1.9)+(-0.1)+(-0.65)
=0.65-0.65-(1.9+0.1)
=-2
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