3.61-2.83+4.39-0.17简便计算
问题描述:
3.61-2.83+4.39-0.17简便计算
答
(3.61+4.39)-(2.83+0.17)
答
(3.61+4.39)-(2.83+0.17)
=8-3
=5
答
3.61-2.83+4.39-0.17
=3.61+4.39-(2.83+0.17)
=8-3
=5