3.9+4.08+3.92+1.1 简便计算
问题描述:
3.9+4.08+3.92+1.1 简便计算
答
=(3.9+1.1)+(4.08+3.92)
=5+8
=13
3.9+4.08+3.92+1.1 简便计算
=(3.9+1.1)+(4.08+3.92)
=5+8
=13