F.1數學題(20)
要部驟~
1.(+15)x(-8)+(-6)
2.(+6)+(+52)除(-13)
3.(+12分之5)x(-3)+(-2又8分之1)
4.(+3)分之(-8)除(-6)分之(-24)-(-3)分之(-2)
回答 (4)
1. (+15)x(-8)+(-6)
= -120+(-6)
= -126
2.(+6)+(+52)除(-13)
=(+6)+(-4)
=2
3.(+12分之5)x(-3)+(-2又8分之1)
= -1又4分1x(-3)+(-2又8分之1)
= 3又4分3+(-2又8分之1)
= -5又8分之7
4.(+3)分之(-8)除(-6)分之(-24)-(-3)分之(-2)
= (-3分之-2) - (-3分之-2)
= 0
2007-09-26 17:06:50 補充:
I am also F.1
參考: Me
1.(+15)x(-8)+(-6)
= -120+(-6)
= -120-6
= -126
2. (+6)+(+52)/(-13)
=(+6)+(-4)
=+6-4
=2
3..(+12分之5)x(-3)+(-2又8分之1)
5 1
+________(3)+2_____________
12 8
= 5 1
________ +2_______________
4 8
= 10 1
______________ +2__________
8 8
= 11
2 _______
8
= 3
3 _______
8
第4係好明你說什麼?是這樣嗎?
-8 (-24) -2
________ / __________--- __________
+3 -6 -3
參考: ME,5知對不對的!
1.(+15)x(-8)+(-6)
=(-120)+(-6)
=(-126)
2.(+6)+(+52)除(-13)
=(+6)+(-4)
=(+2)
3.(+12分之5)x(-3)+(-2又8分之1)
=(-4分之5)+(-2又8分之1)
=(-8分之10)+(-2又8分之1)
=(-2又8分之11)
=(-3又8分之3)
4.(+3)分之(-8)除(-6)分之(-24)-(-3)分之(-2)
=(+3)分之(-8)除6分之24-3分之2
=(+1)分之(-8)x24分之2-3分之2
=24分之(-16)-3分之2
=24分之(-16)-24分之16
=24分之(-32)
參考: myself
1.(+15)x(-8)+(-6)
= (-120)+(-6)
= (-120)-6
= -126
2.(+6)+(+52)/(-13)
= (+6)+(-4)
= 6-4
= 2
3.(+5/12)*(-3)+(-17/8)
= (-5/4)+(-17/8)
= (-5/4)*1+(-17/8)
= (-5/4)*(2/2)+(-17/8)
= (-10/8)-(17/8)
= -27/8
4.(-8/3)/(-24/-6)-(-2/-3)
= (-8/3)/(4)-(-2/-3)
= (-8/3)*(1/4)-(-2/-3)
= (-2/3)-(-2/-3)
= (-2/3)-(2/3)
= -4/3
2007-09-26 16:48:59 補充:
2樓.,第4題係除唔係乘點解大家唔用caltor ne?
參考: me
收錄日期: 2021-04-13 19:11:56
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