Question

2999+299.9+29.99+2.999+1.111怎么简算，

Answer 1

2999+299.9+29.99+2.999+1.111
简便计算
=（2999+1）+(299.9+0.1）+（29.99+0.01）+（2.999+0.001)
=3000+300+30+3
=3333
祝天天向上。