9.7-3.79+1.3-6.21 怎样简便计算?
问题描述:
9.7-3.79+1.3-6.21 怎样简便计算?
答
(9.7+1.3)-(3.79+6.21)
=11-10
=1
9.7-3.79+1.3-6.21 怎样简便计算?
(9.7+1.3)-(3.79+6.21)
=11-10
=1