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