有d數學唔知點做..
大家要幫幫我plz..
請列式!!!!!!!!!計數式的[值]
1.負3-(負5)=??
2.(負7)-5-(+7)=??
3.負2+(負8)-(+4)=??
4.(+2)-(負4)+(負3)=??
5.4-(+10)+(負7)-(負7)=??
6.12+(負7)+(+10)-(+14)=??
7.(+10)x(+3)=??
8.6x(負3)=??
9.5x(負9)=??
10.負6x(3負)x(負2)=??
11.負4x(+10)x(負3)=??
12.64除(負8)=??
13.6除(負3分之24)=??
14.負3x(+10)x(負3)x(負3分之2)=??
15.負6x(+10)除(負2分之3)=??
16.(負32)除(+9分之8)x(負6分之1)=??
17.(+20)除(+4)x(負2)=??
18.(負14)+(負8)+(負6)除(+3)=??
請列式!!!!!!!!!請列式!!!!!!!!!請列式!!!!!!!!!請列式!!!!!!!!!
中一數學功課~急~今天要的!!!!
2008-10-06 1:15 am
回答 (2)
2008-10-06 1:49 am
✔ 最佳答案
1. -3-(-5)= -3+5
= 2
2.(-7)-5-(+7)
= -7-5-7
= -19
3.-2+(-8)-(+4)
= -2-8-4
= -14
4.(+2)-(-4)+(-3)
= 2+4-3
= 3
5.4-(+10)+(-7)-(-7)
= 4-10-7+7
= -6
6.12+(-7)+(+10)-(+14)
= 12-7+10-14
= 1
7.+10 x (+3)
= 10 x 3
= 30
8.6 x(-3)
= -18
9.5 x(-9)
= -45
10. -6x(-3)x(-2)
= 18 x (-2)
= -36
11. -4 x (+10)x(-3)
= -40 x (-3)
= 120
12. 64÷(-8)
= -8
13. 6÷(24/-3)
= 6÷ (-8)
= 6 × 1/-8
= 3/-4
14. -3 × (+10) × (-3) ×(2/-3)
= -30 × (-3) × (2/-3)
= 90 × (2/-3)
= -30 × 2
= -60
15. -6 × (+10) ÷ (3/-2)
= -60 ÷ (3/-2)
= -60 × -2/3
= (-20) × (-2)
= 40
16. (-32) ÷ (8/9) × (1/-6)
= -32 × 9/8 × (1/-6)
= -4 × 9 × (1/6)
= -36 × (1/6)
= -6 × 1
= -6
17. (+20)÷(+4)×(-2)
= 5 × (-2)
= -10
18. (-14) + (-8) + (-6) ÷ (+3)
= (-14) + (-8) + (-2)
= -14-8-2
= -24
好辛苦計架 @@
如有錯誤 請原諒
參考: 我
2008-10-06 1:52 am
1.-3-(-5)
=-3+5
=2
2.(-7)-5-(+7)
=-7-5-7
=-19
3.-2+(-8)-(+4)
=-2-8-4
=-14
4.(+2)-(-4)+(-3)
=2+4-3
=3
5.4-(+10)+(-7)-(7)
=4-10-7+7
=-6
6.12+(-7)+(+10)-(+14)
=12-7+10-14
=1
7.(+10)x(+3)
=+(10x3)
=30
8.6x(-3)
=-(6x3)
=-18
9.5x(-9)
=-(5x9)
=-45
10.-6x(-3)x(-2)
=-(6x3x2)
=-36
11.-4x(+10)x(-3)
=+(4x10x3)
=120
12.64÷(-8)
=-(64÷8)
=-8
13.6÷(-24/3)
=-(6x3/24)
=-(6x1/8)
=-3/4
14.-3x(+10)x(-3)x(-2/3)
=-(3x10x3x2/3)
=-60
15.-6x(+10)÷(-3/2)
=+(6x10x2/3)
=40
16.(-32)÷(+8/9)x(-1/6)
=+(32x9/8x6)
=216
17.(+20)÷(+4)x(-2)
=-(20÷4x2)
=10
18.(-14)+(-8)+(-6)÷(+3)
=-14-8-(6÷3)
=-14-8-2
=-24
2008-10-05 17:57:12 補充：
sorry 我同上面果位都計錯
16.(-32)÷(+8/9)x(-1/6)
=+(32x9/8x1/6)
=+6
2008-10-05 18:00:29 補充：
第十七題答案漏了-
=-3+5
=2
2.(-7)-5-(+7)
=-7-5-7
=-19
3.-2+(-8)-(+4)
=-2-8-4
=-14
4.(+2)-(-4)+(-3)
=2+4-3
=3
5.4-(+10)+(-7)-(7)
=4-10-7+7
=-6
6.12+(-7)+(+10)-(+14)
=12-7+10-14
=1
7.(+10)x(+3)
=+(10x3)
=30
8.6x(-3)
=-(6x3)
=-18
9.5x(-9)
=-(5x9)
=-45
10.-6x(-3)x(-2)
=-(6x3x2)
=-36
11.-4x(+10)x(-3)
=+(4x10x3)
=120
12.64÷(-8)
=-(64÷8)
=-8
13.6÷(-24/3)
=-(6x3/24)
=-(6x1/8)
=-3/4
14.-3x(+10)x(-3)x(-2/3)
=-(3x10x3x2/3)
=-60
15.-6x(+10)÷(-3/2)
=+(6x10x2/3)
=40
16.(-32)÷(+8/9)x(-1/6)
=+(32x9/8x6)
=216
17.(+20)÷(+4)x(-2)
=-(20÷4x2)
=10
18.(-14)+(-8)+(-6)÷(+3)
=-14-8-(6÷3)
=-14-8-2
=-24
2008-10-05 17:57:12 補充：
sorry 我同上面果位都計錯
16.(-32)÷(+8/9)x(-1/6)
=+(32x9/8x1/6)
=+6
2008-10-05 18:00:29 補充：
第十七題答案漏了-
參考: me, me, me
收錄日期: 2021-04-13 18:03:47
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20081005000051KK01864