YK Forum - Powered by Discuz! Board

標題: F.2 maths 暑假作業 help me!!! [打印本頁]

作者: Elaine 時間: 2007-8-20 11:47 AM 標題: F.2 maths 暑假作業 help me!!!

1 . Marry spends $825 to buy a T-shirt and a coat.The price of T-SHIRT is $258 cheaper thanHalf of the price of the coat.
How much is the coat?

2 . 三角形數列的數型?

3 . 1/3 , 1/5 , 1/9 , 1/17 , 1/33 , ...
   數型 :

4 . 81,54,36,24,16...是屬於哪種數列?
   寫出隨後的三項 :

5 . 長方體魚缸長20cm,闊10cm,高14.5cm,入面有2升的水。若從魚缸裏抽去水1.5升,
   問水會下降多少?

6 . 蘋果汁每瓶0.75升,4瓶共售$46。橙汁每瓶1.25升,5瓶共售$77.5。
   分別求出每升蘋果汁及每升橙汁的售價(答案以$/L表示)

7 . Some sweets are shared by a group of children.If each child gets 5 sweets , 8 sweets will be left.
If each child wants to get 7 sweets, 10 more sweets will be needed . How many sweets are there?

8 .  Suppose each kilogram of pork costs $15 and each kilogram og beef costs$21. If Susan uses$140
   to buy 8kilograms of pork and beef altogether,how many kilograms of beef does she buy?

9 . Find two consecutive integers such that 3/5 of the larger number exceeds 1/4 of the smaller one by 5又2份之一

Help me please~~~~~~~

作者: ●siu_y_an§ 時間: 2007-8-20 12:22 PM

1.
2分之x - 258)+x=825
         2分之x+x=825+258
         2分之3x=1083
                  3x=1083乘2
                  3x=2166
                     x=2166除3
                     x=$722

2.n(n+1)除2
3.1/1+2n次方
4.33/3，64/9，128/27
5.1500除20除10
=75除10
=7.5CM
6.蘋果汁:
46除(0.75乘4)
=46除3
=15.33($/L)

橙汁:
77.5除(1.25乘5)
=77.5除6.25
=12.4($/L)

其如果D我仲未做= =..
SOR= =..

作者: Elaine 時間: 2007-8-20 01:10 PM 標題: 回覆 #2 ●siu_y_an§ 的帖子

thx~~~~~~~~~~~~~`

歡迎光臨 YK Forum (http://eyankit.com/forum/)