我有幾條數學文字題唔明呀

1. Form 4 number with the numbers give Arrange them in descending :
a.) 6, 5, 0, 2, 1, 3, 6, 9 ________ , _________ , _________ , _________
b.) 4, 8, 0 , 0 , 1 , 7 , 8 ________ , _________ , _________ , _________
(每題) 以這七個數目字，組成四個數字，數值由大至小。例：96653210,
96653201......

2. There are 4 classes in primary 4 . There are 42 pupils in each of the 2 classes 4A and 4B. There are 39 pupils in 4C and 41 pupils in 4D . What is the average number of pupils in each class ?小學四年級共有四班, 4A及4B各有42人，4C這有39人，4D有41人，問平均每班有多少人？

3. On Monday , Chi keung finished reading 3 of a story book . On Tuesday, he finished 1 of it . What fraction of the book did he finish in the two days ?
志強在星期一讀了其中三本書，星期二讀了其中一本書，問他在這兩天，各讀了書的分數？(第一、二天各讀了全部書的幾份幾？)

註，做數要親自思考，才真正學到運算技巧，不能速成。

4. One pail holds 4 1 L of water . Another pail holds 1 4 L. How much more water does one pail hold than the other ?有個水桶裝了41公升水，另一個水桶裝了14公升，那個比這個裝多了多少公升？

5. Each side of a square is 1 m long . Find the perimeter of the square.正方形每邊長 1米，求邊界是多少？

6. One piece of stick is 3 m long . A second stick is 3 as long as the first one. How long is the second piece ? 一枝棒三米長，第二枝棒的長度是第一枝的三倍，第二枝棒有幾長？

2010-10-01 11:04:22 補充：
註，做數要親自思考，才能學到運算技巧，不能速成。

1. Form 4 number with the numbers give Arrange them in descending :
a.) 6, 5, 0, 2, 1, 3, 6, 9 _96653210_ , _96653201_ , _96652310_ , _9662301_
b.) 4, 8, 0 , 0 , 1 , 7 , 8 _8874100_ , _8874010__ , _8874001__ , _8871400_

將八個數目字組成一數目, 要最大四個數目, 由大至細排列.
(e.g. 兩個數目字可組成兩個數目,12, 21; 三個數目字可組成六個數目)
(b) 題 :將七個數目字組成一數目, 要最大四個數目,由大至細排列.

2. There are 4 classes in primary 4 . There are 42 pupils in each of the 2 classes. 4A and 4B. There are 39 pupils in 4C and 41 pupils in 4D . What is the average number of pupils in each class ?
班級4A和班級4B各有42個學生
班級4C有39個學生
班級4D有41個學生
四班中, 平均每班幾人 ?
Total number of students in all four classes = 42 +42 +39 + 41 = 164
Average number of pupils in each class = 164 students/4 = 41 students per class

Average number of students in four classes = 41 students per class


問題3, 4, 5, 6, I guess it is fraction. The division bars are pretty messed up!

3. On Monday , Chi keung finished reading 3 of a story book . One Tuesday, he
---
5
finished 1 of it . What fraction of the book did he finish in the two days ?
---
4
3/5 + 1/4 = 12/20 + 5/20 = 7/20 (seven over twenty)
He finished 7/20 of the book in 2 days

4. One pail holds 4 1 L of water . Another pail holds 1 4 L. How much
--- ---
3 5

more water does one pail hold than the other ?
4又 1/3 – 1又 4/5 = 13/3 - 9/5 = 65/15 – 27/15 = 38/15 = 2又8/15 L


5. Each side of a square is 1 m long . Find the perimeter of the square.
-----
3
1/3 m x 4 =4/3 = 1又1/3 m (一又三分一 m)

the perimeter of the square= 1又1/3 m

6. One piece of stick is 3 m long . A second stick is 3 as long as the first one
---- ----
5 4
How long is the second piece ?

3/4 of first stick = 3/4 m x 3/5 = 9/20 m

The second stick is 9/20 m long (9 over 20)

1. 由大至細排列

2.平均每班幾人( 全部加埋再除4)

3.兩日內他看完書中幾分之幾

5.個正方形ge周界(1x4)

6.第二枝野ge長度( 3+3 )