5.264+2.354-6.99【用简便计算】
问题描述:
5.264+2.354-6.99【用简便计算】
答
5.264+2.354-6.99
=5.264+2.354-(7-0.01)
=5.264+2.354-7+0.01
=7.618-7+0.01
=0.618+0.01
=0.628