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14.15+2.9+1.85的简便算法

分类: 作业答案 • 2022-05-16 11:16:28

问题描述：

14.15+2.9+1.85的简便算法

答

14＋2＋2.9＝18.9

答

14+0.15+2.9+1+0.85
=14+1+0.15+0.85+2.9
=15+1+2.9
=18.9

答

14.15+2.9+1.85
=14.15+1.85+2.9
=16+2.9
=18.9