help!!!math!!

2007-08-17 11:10 pm
1. (-3) + 5 =

2. (-3) - 5=

3. -3 - (-5) =

4. -3 + (-5)=

5. (-4)(-5) =

6. (+7)(-6)=

7. (-4)(+3)(-5)=

8. (-2)(+3)(-4)=

9. -18分之-6=

10. (-20)分之(-15)(+4)=

11. (-2) - (-4) + (-3) -5 =



12. (-36)分之(-32)(-9) + (+2)分之(-4)(-6)=


13.今天北京上午的氣溫是5度 下午上升了2度 到晚上下降至-10度..求下午與晚上的氣溫相 差 多少度(列式計算)

回答 (10)

2007-08-17 11:30 pm
✔ 最佳答案
help!!!math!!
1. (-3) + 5 = 5 - 3 = 2

2. (-3) - 5= -3 - 5 = -8

3. -3 - (-5) = -3 + 5 = -2

4. -3 + (-5)= -3 - 5 =-8

5. (-4)(-5) = 20

6. (+7)(-6)= -42

7. (-4)(+3)(-5)= 60

8. (-2)(+3)(-4)= 24

9. -18分之-6= 3分之1

10. (-20)分之(-15)(+4)= 4分之3(+4)=3

11. (-2) - (-4) + (-3) -5 = -6

12. (-36)分之(-32)(-9) + (+2)分之(-4)(-6)= -8+12 = 4

13.設下午至晚上下降了y度
5 + 2 - y = -10
7-y=-10
17=y
y=17.
所以下午與晚上的氣溫相差17度.
參考: 我同計數機.
2007-08-17 11:45 pm
1. =2
2.= 8
3. =2
4. =-8
5. =20
6. =42
7. =60
8. =24
9. =1/3
10. =3
11.=6
12.=4
13.
afternoon: 5+2 = 7
At night: -10

Different = 7-(-10) = 17
2007-08-17 11:44 pm
1.+2
2.-8
3.+2
4.-8
5.+20
6.-42
7.+60
8.+24
9.3分之1
10.+3
11.-6
12.+4
13.(5+2)- (-10)
  =7+10
  =17度
我用心算計完,仲用咗計算機計多一次。
參考: 中二o既自己
2007-08-17 11:27 pm
1. (-3) + 5 = 2

2. (-3) - 5= -8

3. -3 - (-5) = 2

4. -3 + (-5)= -8

5. (-4)(-5) = 20

6. (+7)(-6)= -42

7. (-4)(+3)(-5)= 60

8. (-2)(+3)(-4)= 24

9. -18分之-6= 1/3

10. (-20)分之(-15)(+4)= 9/20

11. (-2) - (-4) + (-3) -5 = -6



12. (-36)分之(-32)(-9) + (+2)分之(-4)(-6)= 4


13.今天北京上午的氣溫是5度 下午上升了2度 到晚上下降至-10度..求下午與晚上的氣溫相 差 多少度(列式計算)


下午: 5+2=7度
晚上: 5+7-10=2度
所以 下午 - 晚上
7 - 2 = 5 度
答:下午與晚上的氣溫相 差是5度.
參考: 自己
2007-08-17 11:24 pm
01. -2
02. -8
03. 2
04. -8
05. 20
06. -42
07. 60
08. 24
09. 3分之1
10. 3
11. -6
12. 4
13.
下午係7度, 夜晚係-10度
相差為 7-(-10) = 17度
參考: Self
2007-08-17 11:21 pm
1. (-3) + 5 =2

2. (-3) - 5=-8

3. -3 - (-5) =2

4. -3 + (-5)=-8

5. (-4)(-5) =20

6. (+7)(-6)=-42

7. (-4)(+3)(-5)=60

8. (-2)(+3)(-4)=24

9. -18分之-6=3

10. (-20)分之(-15)(+4)=3

11. (-2) - (-4) + (-3) -5 =17



12. (-36)分之(-32)(-9) + (+2)分之(-4)(-6)=20


13.今天北京上午的氣溫是5度 下午上升了2度 到晚上下降至-10度..求下午與晚上的氣溫相 差 多少度(列式計算)

5+2-(-10)
=17
參考: MYSELF
2007-08-17 11:18 pm
1. (-3) + 5 =2

2. (-3) - 5= - 8

3. -3 - (-5) =2

4. -3 + (-5)= - 8

2007-08-17 15:23:36 補充:
5. (-4)(-5) = 206. ( 7)(-6)= -427. (-4)( 3)(-5)= 608. (-2)( 3)(-4)= 249. -18分之-6= 3分之110. (-20)分之(-15)( 4)= 311. (-2) - (-4) (-3) -5 = 1712. (-36)分之(-32)(-9) ( 2)分之(-4)(-6)= -8 12 = 413.列式計算 =am 5 2 = 7度 pm = -10度 = 7度 - (-10度) = 17度
2007-08-17 11:17 pm
1. (-3) + 5 = 2

2. (-3) - 5= -8

3. -3 - (-5) = 2

4. -3 + (-5)= -8

5. (-4)(-5) = 20

6. (+7)(-6)= -42

7. (-4)(+3)(-5)= 60

8. (-2)(+3)(-4)= 24

9. -18分之-6= 3分之1

10. (-20)分之(-15)(+4)= 3

11. (-2) - (-4) + (-3) -5 = 17



12. (-36)分之(-32)(-9) + (+2)分之(-4)(-6)= -8 + 12 = 4


13.今天北京上午的氣溫是5度 下午上升了2度 到晚上下降至-10度..求下午與晚上的氣溫相 差 多少度(列式計算) =>> am 5 + 2 = 7度 pm = -10度 =>> 7度 - (-10度) = 17度

2007-08-17 15:20:05 補充:
11. (-2) - (-4) + (-3) -5 = 17 sorry, 應該係 -6睇錯左最後係-3乘-5, oops! :p
參考: myself
2007-08-17 11:17 pm
1. 2
2. -8
3. 2
4. -8
5. 20
6. -42
7. 60
8. 24
9. 1/3
10. 3
11. -6
12. 4
13.
afternoon: 5+2 = 7
At night: -10

Different = 7-(-10) = 17

Hope i can help u^^
2007-08-17 11:14 pm
1) 2
2) -8
3) 2
4) -8


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