1.(+6)(+2)-(+6)(-3)
2.(+7)(-4)-(+3)(-4)
3.(-7)(-6)-(-3)(-6)
4.(+6)x[(+2)-(-3)]
5.(-12)x[(-11)-(-14)]
6.[(+7)-(+3)]x(-4)
7.(+7)-(-3)(+2)-(+3)(-3)
8.(-7)(-3)+(-4)(-5)-(+3)(-2)(-5)
9.(-8)-(+3)(-2)-(-4)(+5)
10.(-3)-(-2)(+3)-(-3)(-4)(-5)
11.[(+8)-(-4)(+3)]x[(+2)(-2)]
12.[(-9)+(-3)(+5)]x[(-4)(-3)]
13.[(+8)-(-4)(+3)]x[(-4)(-3)]
14.[(-2)(+3)-(-2)(+3)]x[(+2)(-3)]
中一數 ;] 2o點~
2008-09-21 11:30 pm
回答 (4)
2008-09-22 12:03 am
✔ 最佳答案
1. (+6)(+2)-(+6)(-3)=18-(-18)
=18+18
=36
2. (+7)(-4)-(+3)(-6)
=-28-(-18)
=-28+18
=-10
3. (-7)(-6)-(-3)(-6)
=42-18
=24
4. (+6)x[(+2)-(-3)]
=6x5
=30
5. (-12)x[(-11)-(-14)]
=-12x(-11+14)
=-12x3
=-36
6. [(+7)-(+3)]x(-4)
=(7-3)x(-4)
=4x(-4)
=-16
7. (+7)-(-3)(+2)-(+3)(-3)
=7-(-6)-(-9)
=7+6+9
=13+9
=22
8. (-7)(-3)+(-4)(-5)-(+3)(-2)(-5)
=21+20-30
=11
9. (-8)-(+3)(-2)-(-4)(+5)
=-8-(-6)-(-20)
=8+6+20
=34
10. (-3)-(-2)(+3)-(-3)(-4)(-5)
=-3-(-6)-(-60)
=-3+6+60
=68
11. [(+8)-(-4)(+3)]x[(+2)(-2)]
=[8-(-12)]x(-4)
=20x(-4)
=-80
12. [(-9)+(-3)(+5)]x[(-4)(-3)]
=[-9+(-15)]x12
=(-9-15)x12
=-24x12
=-288
13. [(+8)-(-4)(+3)]x[(-4)(-3)]
=[8-(-12)]x12
=20x12
=240
14. [(-2)(+3)-(-2)(+3)]x[(+2)(-3)]
=[-6-(-6)]x(-6)
=(-6+6)x(-6)
=0x(-6)
=0
2008-09-22 2:06 am
1. (+6)(+2)-(+6)(-3)
=(+12)-(-18)
=(+12)+18
=+30
2. (+7)(-4)-(+3)(-6)
=(-28)-(-18)
=(-28)+18
=-10
3. (-7)(-6)-(-3)(-6)
=(+42)-18
=+24
4. (+6)x[(+2)-(-3)]
=(+6)x[(+2)+3]
=(+6)x5
=+30
5. (-12)x[(-11)-(-14)]
=-12x(-11+14)
=(-12)x(+3)
=-36
6. [(+7)-(+3)]x(-4)
=[(+7)-3]x(-4)
=(+4)x(-4)
=-16
7. (+7)-(-3)(+2)-(+3)(-3)
=(+7)-(-6)-(-9)
=(+7)+(+6)+(+9)
=(+13)+(+9)
=+22
8. (-7)(-3)+(-4)(-5)-(+3)(-2)(-5)
=(+21)+(+20)-(30)
=+11
9. (-8)-(+3)(-2)-(-4)(+5)
=(-8)-(-6)-(-20)
=(+8)+(+6)+(+20)
=+34
10. (-3)-(-2)(+3)-(-3)(-4)(-5)
=(-3)-(-6)-(-60)
=(-3)+(+6)+(+60)
=+68
11. [(+8)-(-4)(+3)]x[(+2)(-2)]
=[(+8)-(-12)]x(-4)
=(+20)x(-4)
=-80
12. [(-9)+(-3)(+5)]x[(-4)(-3)]
=[-9+(-15)]x12
=(-9-15)x12
=-24x12
=-288
13. [(+8)-(-4)(+3)]x[(-4)(-3)]
=[8-(-12)]x12
=(+20)x(+12)
=+240
14. [(-2)(+3)-(-2)(+3)]x[(+2)(-3)]
=[-6-(-6)]x(-6)
=(-6+6)x(-6)
=0x(-6)
=0
=(+12)-(-18)
=(+12)+18
=+30
2. (+7)(-4)-(+3)(-6)
=(-28)-(-18)
=(-28)+18
=-10
3. (-7)(-6)-(-3)(-6)
=(+42)-18
=+24
4. (+6)x[(+2)-(-3)]
=(+6)x[(+2)+3]
=(+6)x5
=+30
5. (-12)x[(-11)-(-14)]
=-12x(-11+14)
=(-12)x(+3)
=-36
6. [(+7)-(+3)]x(-4)
=[(+7)-3]x(-4)
=(+4)x(-4)
=-16
7. (+7)-(-3)(+2)-(+3)(-3)
=(+7)-(-6)-(-9)
=(+7)+(+6)+(+9)
=(+13)+(+9)
=+22
8. (-7)(-3)+(-4)(-5)-(+3)(-2)(-5)
=(+21)+(+20)-(30)
=+11
9. (-8)-(+3)(-2)-(-4)(+5)
=(-8)-(-6)-(-20)
=(+8)+(+6)+(+20)
=+34
10. (-3)-(-2)(+3)-(-3)(-4)(-5)
=(-3)-(-6)-(-60)
=(-3)+(+6)+(+60)
=+68
11. [(+8)-(-4)(+3)]x[(+2)(-2)]
=[(+8)-(-12)]x(-4)
=(+20)x(-4)
=-80
12. [(-9)+(-3)(+5)]x[(-4)(-3)]
=[-9+(-15)]x12
=(-9-15)x12
=-24x12
=-288
13. [(+8)-(-4)(+3)]x[(-4)(-3)]
=[8-(-12)]x12
=(+20)x(+12)
=+240
14. [(-2)(+3)-(-2)(+3)]x[(+2)(-3)]
=[-6-(-6)]x(-6)
=(-6+6)x(-6)
=0x(-6)
=0
2008-09-22 12:06 am
1.30
2.-16
3.24
4.30
5.-36
6.-16
7.22
8.71
9.18
10.63
11. -80
12. -288
13. 240
14. 0
2.-16
3.24
4.30
5.-36
6.-16
7.22
8.71
9.18
10.63
11. -80
12. -288
13. 240
14. 0
參考: me
2008-09-21 11:34 pm
1.30
2.-16
3.24
4.30
5.-36
6.-16
7.22
8.71
9.18
10.63
11.
2.-16
3.24
4.30
5.-36
6.-16
7.22
8.71
9.18
10.63
11.
收錄日期: 2021-04-13 16:05:35
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080921000051KK01562