作业帮简便运算1.135+3.346+5.557+7.768+9.979
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/08 13:57:54
简便运算1.135+3.346+5.557+7.768+9.979
简便运算1.135+3.346+5.557+7.768+9.979
简便运算1.135+3.346+5.557+7.768+9.979
1.135+3.346+5.557+7.768+9.979
1.135+3.346+5.557+（5.557+2.211)+(5.557+4.422)
//注：把7.768分成5.557+2.211,把9.979分成5.557+4.422
1.135+3.346+5.557+5.557+2.211+5.557+4.422
(1.135+4.422)+(3.346+2.211)+5.557+5.557+5.557
5.557+5.557+5.557+5.557+5.557
5.557×5＝27.785