作业帮简便计算119.75+299.75+399.75+499.75+1
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/05 23:08:36
简便计算119.75+299.75+399.75+499.75+1
简便计算119.75+299.75+399.75+499.75+1
简便计算119.75+299.75+399.75+499.75+1
119.75+299.75+399.75+499.75+1
=120-0.25+300-0.25+400-0.25+500-0.25+1
=120+300+400+500-0.25*4+1
=1320
1320
119.75+299.75+399.75+499.75+1=119.75+299.75+399.75+499.75+（0.25+0.25+0.25+0.25）=（119.75+0.25）+（299.75+0.25）+（399.75+0.25）+（499.75+0.25）=120+300+400+500=1320