简便计算1.7×0.31+6.9×0.17

来源：学生作业帮助网编辑：作业帮时间：2024/11/09 06:09:44

简便计算1.7×0.31+6.9×0.17
简便计算1.7×0.31+6.9×0.17

简便计算1.7×0.31+6.9×0.17
1.7×0.31+6.9×0.17
=1.7×0.31+0.69×1.7
=1.7×(0.31+0.69)
=1.7×1
=1.7

1.7*（0.31+0.69）=1.7*1=1.7