4.99+4.99+4.99+0.04+4.99 怎么简便计算快·········!
来源：学生作业帮助网 编辑：六六作业网 时间：2024/07/10 15:48:34
4.99+4.99+4.99+0.04+4.99怎么简便计算快·········!4.99+4.99+4.99+0.04+4.99怎么简便计算快·········!4.99+4.99+4.99+0.0
4.99+4.99+4.99+0.04+4.99 怎么简便计算快·········!
4.99+4.99+4.99+0.04+4.99 怎么简便计算
快·········!
4.99+4.99+4.99+0.04+4.99 怎么简便计算快·········!
4.99+4.99+4.99+0.04+4.99
=4.99+4.99+4.99+0.01+0.01+0.01+0.01+4.99
=(4.99+0.01)+(4.99+0.01)+(4.99+0.01)+(4.99+0.01)
=5+5+5+5
=20
原式=4.99+0.01+4.99+0.01+4.99+0.01+4.99+0.01=5+5+5+5=20