數的有向數.......(10題)

2007-08-28 7:32 pm
計算一:
(-2)(-3)(+4)-(-5)(-6)=?

A.-6 B.6 C.24 D.56

計算二:
(-5)(+2)-(-2)除(-4)(-6)-(-5)(+8)=?

A.6 B.16/11 C.-22/3 D.-8

計算三:何者最大?
A.6 B.-0.26 C.-0.25 D.-0.24

計算四:
(-4)(-5)=?

計算五:
(+7)(-6)=?

計算六:
(-4)(+3)(-5)=?

計算七:
(-2)(+3)(-4)=?

計算八:
-18分之-6=?

計算九:
(-20)÷(-15)(+4)=?

計算十: 下列可者質數?
A.35 B.49 C.53 D.87

回答 (4)

2007-08-28 7:38 pm
✔ 最佳答案
計算一:
(-2)(-3)(+4)-(-5)(-6)=54wo~

A.-6 B.6 C.24 D.56 吓??

計算二:
(-5)(+2)-(-2)除(-4)(-6)-(-5)(+8)=64/12

A.6 B.16/11 C.-22/3 D.-8

計算三:何者最大?
A.6 B.-0.26 C.-0.25 D.-0.24
A~
計算四:
(-4)(-5)=20

計算五:
(+7)(-6)=-42

計算六:
(-4)(+3)(-5)=60

計算七:
(-2)(+3)(-4)=24

計算八:
-18分之-6=1/3

計算九:
(-20)÷(-15)(+4)=1/3

計算十: 下列可者質數?
A.35 B.49 C.53 D.87 C
2007-08-28 8:17 pm
1) A
2) D
3) A
4) 20
5) -42
6) 60
7) 24
8) 1/2
9) 1/3
10) C
參考: me
2007-08-28 7:48 pm
計算一:
(-2)(-3)(+4)-(-5)(-6)=? A

計算二:
(-5)(+2)-(-2)除(-4)(-6)-(-5)(+8)=? A

計算三:何者最大? A

計算四:
(-4)(-5)=? 20

計算五:
(+7)(-6)=? -42

計算六:
(-4)(+3)(-5)=? 60

計算七:
(-2)(+3)(-4)=? 24

計算八:
-18分之-6=? 1/3

計算九:
(-20)÷(-15)(+4)=? 5/1/3

計算十: 下列可者質數? C

2007-08-28 11:49:52 補充:
計算二:(-5)(+2)-(-2)除(-4)(-6)-(-5)(+8)=? -1/8
2007-08-28 7:46 pm
1. -6
2. -1/8
3. 6
4. 20
5. -42
6. 60
7. 24
8. 3
9. 1/3
10. 53

2007-08-28 12:18:32 補充:
上面錯左1,2,81. (-2)(-3)( 4)-(-5)(-6) (-2)(-3)(4)= -2* -3* 4 ,2*3*4=24,負負得正,所以係24 =24-(-5)(-6) (-5)(-6)= -5 * -6 ,5 * 6 = 30 ,負負得正,所以係30 =24-30所以= -6 唔係54

2007-08-28 12:21:31 補充:
2. (-5)( 2)-(-2)除(-4)(-6)-(-5)( 8) (-5)(2)-(-2) -5*2= -10 負負得正,所以2係 的,便是-10 2= -8 = -------------------

2007-08-28 12:24:40 補充:
(-4)(-6)-(-5)(8) (-4)(-6)-(-5)(8),分開2邊C 1.(-4)(-6) 4*6 = 24 ,負負得正,所以係 24 -8 2.-(-5)(8) 5*8=40 小心,睇唔睇到最先有個負, = ---------------- 所以係負負得正,所以係40 24 40

2007-08-28 12:25:18 補充:
-8 = ------------------ 64 -1 = ----------------- 8 所以係1/8 唔係64/12

2007-08-28 12:27:04 補充:
8. -18分之-6 = 3 -18 同 -------- 一樣 -18除-6= 18/6= 3 負負得正 -6


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