1.计算(1)(-2.5)+(-52.6)
答案:3 悬赏:40 手机版
解决时间 2021-02-12 14:57
- 提问者网友:呐年旧曙光
- 2021-02-11 21:31
1.计算(1)(-2.5)+(-52.6)
最佳答案
- 五星知识达人网友:思契十里
- 2021-02-11 22:23
(-2.5)+(-52.6)
=-2.5-52.6
=-(2.5+52.6)
=-55.1
(-8)+(+21)+(-12)
=-8+21-12
=21-8-12
=21-(12+8)
=21-20
=1
(+30)+(-17.5)+(-20)+(+17.5)
=30-17.5-20+17.5
=30-20-17.5+17.5
=10-0
=10
=-2.5-52.6
=-(2.5+52.6)
=-55.1
(-8)+(+21)+(-12)
=-8+21-12
=21-8-12
=21-(12+8)
=21-20
=1
(+30)+(-17.5)+(-20)+(+17.5)
=30-17.5-20+17.5
=30-20-17.5+17.5
=10-0
=10
全部回答
- 1楼网友:老鼠爱大米
- 2021-02-11 23:16
-54.1
- 2楼网友:冷風如刀
- 2021-02-11 22:44
-54.1
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