8.03减4.7加1.97的简便算法
问题描述：
8.03减4.7加1.97的简便算法
答
8.03-4.7+1.97
=8.03+1.97-4.7
=10-4.7
=5.3
答
=8.03+1.97-4.7
=10-4.7
=5.3