Search found 139 matches

by Oldschool
Wed Oct 09, 2013 10:09 pm
Forum: Primary 3
Topic: Q&A - P3 Math
Replies: 2984
Views: 540511

Re: Q&A - P3 Math

Hi concern2, How can you tell C is 1 unit + 240? As in how to know C has a unit? Dunno if I make sense. I can see A has 3 units and B has 1 unit. cheers Hi, You can rephrase the following (part of the question) Benson ran 240m less than Carl. as "Carl ran 240m more than Benson" Therefore, if Benson...
by Oldschool
Wed Oct 02, 2013 4:06 pm
Forum: Primary 4
Topic: Q&A - P4 Math
Replies: 2654
Views: 321121

Re: Q&A - P4 Math

Hi, need help to clarify part of a question. A van can carry 10 passengers. A bus can carry 3 times more passengers than a van. So how many passengers are there in the bus? 30 or 40? confused .. Hi, You might want to read the following post by another forum user, http://www.kiasuparents.com/kiasu/f...
by Oldschool
Thu Sep 19, 2013 9:39 pm
Forum: Primary 5
Topic: Q&A - P5 Math
Replies: 7005
Views: 641703

Re: Q&A - P5 Math

Starkidz wrote:
Jamesbond wrote:
Starkidz wrote:Please help


Image
8/2=4
4*4*1/2=8
8*4=32cm2.
Ans is 16cm2 .I'm still :?
Hi,

Not drawn to scale,

Image

The triangle is actually 1/4 of the 8 by 8 square.

Regards
by Oldschool
Wed Sep 18, 2013 7:20 pm
Forum: Primary 6 & PSLE
Topic: Q&A - PSLE Math
Replies: 17002
Views: 2121940

Re: Q&A - PSLE Math

Mary Joy wrote:Hello Everyone,

Pls help me with this question taken from Singapore Hokkien Huay Kuan Prelims....Thanks in advance....

Image

Hi,

You already found that --> Angle DCB = DBC
So, AD = DB = CD
Thus triangle ACD is also an iso. triangle.

Regards
by Oldschool
Wed Sep 18, 2013 7:17 pm
Forum: Primary 6 & PSLE
Topic: Q&A - PSLE Math
Replies: 17002
Views: 2121940

Re: Q&A - PSLE Math

Hello Everyone, Pls help me with this question taken from Singapore Hokkien Huay Kuan Prelims....Thanks in advance.... http://i42.tinypic.com/2s0lpq9.jpg Hi, AC, AB and BC are all diagonals of the Cube Face. So they are all equal. Thus it is an equilateral triangle. Hence, the angle is 60 degrees R...
by Oldschool
Sat Sep 14, 2013 1:12 pm
Forum: Primary 6 & PSLE
Topic: Q&A - PSLE Math
Replies: 17002
Views: 2121940

Re: Q&A - PSLE Math

http://i42.tinypic.com/2eb8fnl.jpg Please also help with this one taken from Nanyang 2012 Prelim Q14. Thks much! Hi, Just by shifting the areas, http://i40.tinypic.com/2qnyrux.jpg http://i42.tinypic.com/2i0gac0.jpg http://i43.tinypic.com/301dpgw.jpg Total is 4 circles. Regards Regards
by Oldschool
Thu Sep 12, 2013 12:54 pm
Forum: Primary 5
Topic: Q&A - P5 Math
Replies: 7005
Views: 641703

Re: Q&A - P5 Math

Yesterday, Zainal had 88 more marbles than Lisa . Today, he gave Lisa 2/5 of his marbles. As a result he has half as many marbles as Lisa now . How many marbles do they have altogether now? :shrug: :scratchhead: Hi I'm still :? using MD. Is there any other method than using MD. Please help :imdrown...
by Oldschool
Thu Sep 12, 2013 1:06 am
Forum: Primary 5
Topic: Q&A - P5 Math
Replies: 7005
Views: 641703

Re: Q&A - P5 Math

Yesterday, Zainal had 88 more marbles than Lisa . Today, he gave Lisa 2/5 of his marbles. As a result he has half as many marbles as Lisa now . How many marbles do they have altogether now? :shrug: :scratchhead: Hi, Using MD, http://i44.tinypic.com/1ryolu.jpg The key here is probably the underlined...
by Oldschool
Wed Sep 11, 2013 11:55 pm
Forum: Primary 5
Topic: Q&A - P5 Math
Replies: 7005
Views: 641703

Re: Q&A - P5 Math

In a class, 30% were boys. After another 9 girls and 9 boys joined the class, there were 60% as many boys as girls . How many students were there in the class in the end? :?: :? :scratchhead: Hi, Using MD, http://i43.tinypic.com/20tqb2g.jpg In the end, the number of students in the class is --> 16 ...
by Oldschool
Wed Sep 11, 2013 6:32 pm
Forum: Primary 6 & PSLE
Topic: Q&A - PSLE Math
Replies: 17002
Views: 2121940

Re: Q&A - PSLE Math

Please help. Final question for the day! The figure below is made up of 2 identical circles in a rectangle. The dotted line cuts the rectangle into 2 equal parts. Find the total area of the shaded parts. (Leave your answer correct to 2 decimal places.) http://i39.tinypic.com/4lng3r.jpg Hi, I believ...