Question

109+428-128+191简便方法计算？

Answer 1

109+428-128+191
=109+191+(428-128)
=300+300
=600

Answer 2

（109+191）+（428-128）

Answer 3

109+428-128+191，等于109+191加括号428-128括号等于200+300=500

Answer 4

简便计算方法过程是:
109+428-128+191
＝（109+191）+（428-128）
＝300+300
＝600

Answer 5

109+428-128+191
=(109+191) + (428-128)
=300+300
=600