(-9.5)+(-1.5)-(10.5) (+2.2)-(-0.5)+(+0.7) 請列明步驟或過程
THX!
Maths
2011-09-21 2:14 am
回答 (3)
2011-09-21 2:51 am
✔ 最佳答案
題目是1條還是2條? 括號中間有空白的......1條的......
(-9.5)+(-1.5)-(10.5)(+2.2)-(-0.5)+(+0.7)
= (-9.5)+(-1.5)-(10.5x2.2)-(-0.5)+(+0.7)
= (-9.5)+(-1.5)-(23.1)-(-0.5)+(+0.7)
= -9.5-1.5-23.1+0.5+0.7
= -32.9
2條的......
(-9.5)+(-1.5)-(10.5)
= -9.5-1.5-10.5
= -21.5
(+2.2)-(-0.5)+(+0.7)
= 2.2+0.5+0.7
= 3.4
參考: 自己
2011-09-21 2:46 am
(1)
(-9.5)+(-1.5)-(10.5)
= - 9.5 - 1.5 - 10.5
= - ( 9.5 + 1.5 + 10.5 )
= - 21.5
(2)
(+2.2)-(-0.5)+(+0.7)
= 2.2 + 0.5 + 0.7
= + ( 2.2 + 0.5 + 0.7 )
= + 3.4
(-9.5)+(-1.5)-(10.5)
= - 9.5 - 1.5 - 10.5
= - ( 9.5 + 1.5 + 10.5 )
= - 21.5
(2)
(+2.2)-(-0.5)+(+0.7)
= 2.2 + 0.5 + 0.7
= + ( 2.2 + 0.5 + 0.7 )
= + 3.4
2011-09-21 2:42 am
請問你呢度係兩條數,定係中間既10.5同2.2係乘數呢@@??
如果呢度得1條數
(-9.5)+(-1.5)-(10.5) (+2.2)-(-0.5)+(+0.7)
=(-9.5)-1.5-(10.5x2.2)+0.5+0.7
=(-9.5)-1.5-23.1+0.5+0.7
=-32.9
如果呢度得1條數
(-9.5)+(-1.5)-(10.5) (+2.2)-(-0.5)+(+0.7)
=(-9.5)-1.5-(10.5x2.2)+0.5+0.7
=(-9.5)-1.5-23.1+0.5+0.7
=-32.9
收錄日期: 2021-04-20 11:32:14
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110920000051KK00456