简便计算21.7-八分之五+8.3-八分之三
问题描述:
简便计算21.7-八分之五+8.3-八分之三
答
=21.7+8.3-(5/8+3/8)
=30-1
=29
简便计算21.7-八分之五+8.3-八分之三
=21.7+8.3-(5/8+3/8)
=30-1
=29