13.55+16.64-20.9怎么简便计算
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/16 13:05:50
x)3435643352г|dgu
OnumQ_`gCy`{ah
ө
`*-F&p_\gu
6j)P;6VC"z(<#K$o
13.55+16.64-20.9怎么简便计算
13.55+16.64-20.9怎么简便计算
13.55+16.64-20.9怎么简便计算
13.55+16.64-20.9
=(13+16-20)+(0.55+0.64-0.9)
=9+0.24
=9.24
(13.55+16.45)-20.9+0.19
=30-20.9+0.19
=9.1+0.19
=9.29