超急急急急!!!20點!!!即日!!!有向數!!!
1. (-5)-(-15)
2. (-36)+(+17)
3. (-51)+(+71)
4. (-22)-(+18)
5. -4-8+3
6. (+2)-(+7)+(+9)
7. 16+(-14)-(-18)
8. (-23)+(-9)-(-6)
9. 6-[-4-(13+8)]
10. -5-[2-(12-7)]
math(F.1)(有向數)超急!20點!即日!
2012-10-04 2:29 am
回答 (3)
2012-10-04 2:52 am
✔ 最佳答案
1. (-5)-(-15)= -5+15
=10
2. (-36)+(+17)
=-36+17
=-19
3. (-51)+(+71)
=-51+71
=20
4. (-22)-(+18)
= -22-18
=-40
5. -4-8+3
=-12+3
=-9
6. (+2)-(+7)+(+9)
=2-7+9
=4
7. 16+(-14)-(-18)
=16-14+18
=20
8. (-23)+(-9)-(-6)
=-23-9+6
=-32+6
=-26
9. 6-[-4-(13+8)]
=6-(-4-21)
=6-(-25)
=6+25
=31
10. -5-[2-(12-7)]
=-5-(2-5)
=-5-(-3)
=5+3
=8
參考: Myself
2012-10-08 7:04 am
第10題兩個答案都錯
我的答案：
-5-〔2-(12-7)〕
=-5-(2-5)
=-5-(-3)
=-5+3
=-2
我的答案：
-5-〔2-(12-7)〕
=-5-(2-5)
=-5-(-3)
=-5+3
=-2
2012-10-04 3:01 am
1. (-5)-(-15)= -5+15=10
2. (-36)+(+17)=-36+17=-19
3. (-51)+(+71)=-51+71=20
4. (-22)-(+18)= -22-18=-40
5. -4-8+3=-12+3=-9
6. (+2)-(+7)+(+9)=2-7+9=4
7. 16+(-14)-(-18)=16-14+18=20
8. (-23)+(-9)-(-6)=-23-9+6=-32+6=-26
9. 6-[-4-(13+8)]=6-(-4-21)=6-(-25)=6+25=31
10. -5-[2-(12-7)]=-5-(2-5)=-5-(-3)=5+3=8
2. (-36)+(+17)=-36+17=-19
3. (-51)+(+71)=-51+71=20
4. (-22)-(+18)= -22-18=-40
5. -4-8+3=-12+3=-9
6. (+2)-(+7)+(+9)=2-7+9=4
7. 16+(-14)-(-18)=16-14+18=20
8. (-23)+(-9)-(-6)=-23-9+6=-32+6=-26
9. 6-[-4-(13+8)]=6-(-4-21)=6-(-25)=6+25=31
10. -5-[2-(12-7)]=-5-(2-5)=-5-(-3)=5+3=8
參考: Me
收錄日期: 2021-04-20 13:17:09
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20121003000051KK00385