Practice Paper Solution

Hi 6D pupils,

Below are the solutions for Qn 49 and 50 which I have missed out.

Qn 49a



Qn 49b

qn 50

Science

Hero's steam Engine


Newton's cradle


Newton's Cradle (different style)

Challenging Mathematics Holiday Worksheets

Dear 5D and 5F pupils,

I believe you have already found out that there are some typo errors in the Holiday Mathematics worksheets given to you.

Please ignore those problems. We will change it when school reopens.

Regards,

Mdm Goh

Young Scientist Cards

Hi,

Below are the websites which you can look at when doing your Young Environmentalist card.

Pollution
http://library.thinkquest.org/C0111040/Types/types.php
http://environment.about.com/od/pollution/Environmental_Issues_Pollution.htm

Singapore water and waste water treatment plant
http://www.watertreatment.com.cn/plants/list/Singapore-Jurong-WRP.htm

Refuse Collecting Company
Eg
http://app.nea.gov.sg/cms/htdocs/category_sub.asp?cid=75

http://www.sembwaste.com/newsroom/20010208.shtml


Dengue Fever, Ades Mosquitoes, Mosquitoes Breeding sites, Prevention

http://www.dengue.gov.sg/subject.asp?id=10

Pest

http://www.pestworldforkids.org/index.html (great website)

(note : just copy and paste the web address onto the internet explorer address bar)

They are the answers to most of the questions. Happy surfing..

Enjoy the holidays.

Mdm Goh

Topical Test 14 : Volume (NEW)

Question 1




Question 2



Question 3


Question 4



Question 5



Question 6



Question 7

WB Pg 126 Challenging Practice (NEW)

Workbook Review 5 (NEW)

Answer Key

1) a) 36



b) 9










2) Total : 139.8kg


Average = 139.8 ÷ 4 = 34.95kg


3) Total = 378.10

Average = 378.10 ÷ 5 = $75.62



4) Average = 645.7 litres ÷ 8 = 80.7125 » 80.7 litres



5) Perimeter = 14.8 x 4 = 59.2m



6)
7)


Total score = 92 x 4 = 368


A + B + C + D = 368

78 + 95 + 88 + D = 368


D = 368 - 78 - 95 - 88 = 107 points

8)

9)

10) a) 28% b) 72%

11) a) 67 b) 9/100 c) 9/50 d) 13/25

12) a) 47% b) 70%

c) 10% d) 77%

e) 7% f) 70%

13) 57 out of 100 = 57/100 = 57% = 0.57

3 out of 10 = 3 /10 = 30% = 0.3

14) a) 44% b) 90%

c) 51% d) 36%

15) a) 65% b) 64%

16) 100% - 82% = 18%

18% x 950 = 80/100 x 950 = 171 seats not occupied.

17)

100% - 30% - 28% = 42% --> 50cent coins

42% x $50 = 42/100 x $50 = $21

18)

19)

GST = 7% x $860 = $60.20

Total paid = GST + Price = $60.20 + 860 = $920.20

20)

Discount = 35%

Discounted price = 100% - 35% = 65%

Amount paid = 65% x 725.60 = $471.64

21)

Discounted price = 100% - 15% = 85%

Amount after discount = 85% x 4505 = $3829.25

Downpayment = 4% x 3829.25 = $153.17