數學(中一MATHS)*10點

2007-01-09 3:37 am
13(A)  400g是20kg的百分之幾
13(b) 10 m是8m的百分之幾?

14(a) 450kg的33又3分1%是多小?
14(b) 162m的11又9分1是多小??

15(a) p m的0.5%是30cm,求 p
15(b) q小時的8又3分1%是25分鍾,求q
更新1:

E +可唔可以幫我計15(B),,,唔識計~~THX~

回答 (6)

2007-01-09 3:45 am
✔ 最佳答案
wait ar..

2007-01-08 19:54:44 補充:
13(A) 400g/20kg x 100%=400g/20000g x 100%=1/50 x 100%=2%13(b)10m/8m x 100%=5m/4m x 100%=125%14(a)450kg x 33 1/3%=150kg14(b) 162m x 11 1/9%=1800m(=1.8km)

2007-01-08 19:54:56 補充:
15(a) p x 0.5%= 30cm p=30cm / 0.5% p=6 2/3 (6又二份三)15(b) q hours x 8 1/3% = 25 minsq x 8 1/3%=1/4q = 1/4 除 8 1/3% q = 23 mins
2007-01-09 4:09 am
13(A) 百分之二 or 2%
13(b) 125%

14(a) 150kg
14(b) 1800m

15(a) 6m or 60cm
15(b)0.05小時 or 3分鍾
2007-01-09 3:52 am
13 a) 0.4/20 x 100% = 2%
13 b) 10/8 x 100% = 125%

14 a) 450 x 33.33% = 150kg
14 b} 162 x 11.11% = 18m

15 a) p = 0.3 / 0.5% = 60m
15 b) q = 25 / 60 / 8.33% = 5小時
2007-01-09 3:50 am
13a. 5%
13b. 80%
14a. 150kg
14b. 18
15a. 6000
15b. 3000
參考: me
2007-01-09 3:46 am
我不懂呀!






sorry!
參考: Me
2007-01-09 3:40 am
13a. 5%
13b. 80%

2007-01-08 20:02:03 補充:
14a.15014b.1815a.6015b.5


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