(1)16+(-25)+24+(-35)(2)(-2.48)+(+4.33)+(-7.52)+(-4.33)

问题描述:

(1)16+(-25)+24+(-35)
(2)(-2.48)+(+4.33)+(-7.52)+(-4.33)

1原式等=16+24-(25+35)
= 40-60
=-20
2 原式等=-(2.48+7.52)+4.33-4.33
=-10

1,=16+24-(25+35)
= 40-60
=-20
2 =-(2.48+7.52)+4.33-4.33
=-10