2.72-3.98+5.28-2.02的简便计算
问题描述：
2.72-3.98+5.28-2.02的简便计算
答
=2.72+5.28-(3.98+2.02)
=8-6
=2
2.72-3.98+5.28-2.02的简便计算
=2.72+5.28-(3.98+2.02)
=8-6
=2