8.56-3.7+1.35-6.3 简便计算
人气:371 ℃ 时间:2019-10-09 10:35:31
解答
8.56-3.7+1.35-6.3
=8.56+1.35-3.7-6.3
=8.56+1.34+0.01-10
=9.9+0.01-10
=-0.09
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