12.34+23.45+34.56+45.67+56.78+67.89+79

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/29 07:42:58
12.34+23.45+34.56+45.67+56.78+67.89+79

12.34+23.45+34.56+45.67+56.78+67.89+79
12.34+23.45+34.56+45.67+56.78+67.89+79

12.34+23.45+34.56+45.67+56.78+67.89+79
12.34+23.45+34.56+45.67+56.78+67.89+79
=12.34+(12.34+11.11)+(12.34+11.11+11.11)+(12.34+11.11+11.11+11.11)+(12.34+11.11+11.11+11.11+11.11)+(12.34+11.11+11.11+11.11+11.11+11.11)+(12.34+11.11+11.11+11.11+11.11+11.11+11.11)
=12.34*7+11.11*21
=319.69
或是
12.34+23.45+34.56+45.67+56.78+67.89+79
=(12.34+79)+(23.45+67.89)+(34.56+56.78)+45.67
=91.34*3+45.67
=319.69