Julia Tan
Asked 5 years ago

SG chevron_right chevron_right

Hi All. Don't mind if u can indicate the level of each posted question? So that we are clear if that ques belongs to our kids level or not. I get very worried if my kids and I can't solve certain ques and we dont know which level was that. Thanks alot. I'm new to this forum and there's alot i need to learn from all of u... Thanks admin for letting me join in. :)

Replies 1

Derek Fung

We are all on the same boat.... 😂

2 years ago

Chua Choon Hock
Asked 5 years ago

SG chevron_right Primary 6 chevron_right Fractions

Need help on this Q, anyone can help me ?

Replies 23

Yeo See Yeong

2 years ago
Vera Koh

2 years ago
Yeo See Yeong

working backwards, mine seems to be wrong.... but not sure why.

2 years ago
Chua Choon Hock

Vera Koh is correct. Thanks

2 years ago
Kim Soon Chin

See Yeong's calculations assume that 1 unit of Silver = 1 unit of Gold, which is wrong.

2 years ago
Yeo See Yeong

I am actually assuming they are different. thats why i shade the left over in different direction. if the 2 shaded area is one set (which is 106), then there should be 4 sets of the 2 shaded area. so, the 2 remaining box from silver should be 156?

2 years ago
Jason Oon

I made mistake as well. Thanks Vera for explanation.

2 years ago
Chua Choon Hock

Thanks Kim Soon

2 years ago
Vera Koh

hi see yeong, by assuming that 156 equals 2 units, we are assuming that total for gold (4units) is equivalent to 4units of silver. (which is wat kim soon meant). hope this helps. :)

2 years ago
Yeo See Yeong

Thanks Vera Koh. I will try to comprehend. ☺

2 years ago
Kim Soon Chin

2 years ago
Julia Tan

according to see yeong result, i thought circle 1S and 1G, bal 156 is that two units of 2S? so what is the diff between the ques that wei qiang did for a video on the circle method too? Oh i very confused now. :(

2 years ago
Yeo See Yeong

Thanks Kim Soon Chin, I got it now.

2 years ago
Kim Soon Chin

Julia, what was the question Wei qiang used as an example in his video? Maybe I can take a look n c the difference. 😉

2 years ago
Julia Tan

http://m.youtube.com/watch?v=NKVLFj2lwSQ&feature=youtu.be&hd=1

2 years ago
Julia Tan

btw this ques is p5 or p6? or lower? :(

2 years ago
Chua Choon Hock

p6

2 years ago
Kim Soon Chin

2 years ago
Kim Soon Chin

2 years ago
Soo Vei Li

For those who need a more visual representation and less algebraic manipulation...

2 years ago
Julia Tan

err. ur 26 pop out from where?

2 years ago
Soo Vei Li

Given that 5/6 of silver balloons burst, it means 5/6 of the units as well as 5/6 of the 156 burst, so 2 units are left, as well as 1/6*156 ( = 26).

2 years ago
Julia Tan

thanks all. :)

2 years ago

Adrian Ng
Asked 5 years ago

SG chevron_right Primary 5 chevron_right Number and Algebra

Making it visual...

Replies 1

Jia Ying Sin

Tx

2 years ago

Mei Lai Liong
Asked 5 years ago

SG chevron_right Primary 5 chevron_right Fractions

Can someone help with this p5 question? Thanks!

Replies 2

Kim Soon Chin

2 years ago
Mei Lai Liong

Thanks!

2 years ago

Adaik Valli
Asked 5 years ago

SG chevron_right Primary 5 chevron_right Measurement

We need help to solve this problem. Thank you.

Replies 8

Zhong Shu Hao

1/2 x (1/2 x 1/2) = 1/8

2 years ago
Soo Vei Li

Let the length and breadth of the rectangle be 6 units and 4 units. Ratio Area of triangle : area of rectangle = 1/2*3*2 : 6*4 = 3 : 24 = 1 : 8.

2 years ago
Zhong Shu Hao

The base of the triangle, say AE,, is half the length of the rectangle. The height of the triangle, DF, is also half of the breadth of the rectangle. Let the length of the rectangle be denote by "L" and the breadth of the rectangle be denoted by "B". Area of rectangle = L x B Area of triangle = 1/2 x L/2 x B/2 = 1/2 x 1/2 x L x 1/2 x B = 1/8 x L x B

2 years ago
Adaik Valli

Thanks to both of you.

2 years ago
Soo Vei Li

Doesn't matter what the length and breadth of the rectangle are. I have used numbers which are easy to divide by 2.

2 years ago
Soo Vei Li

Another method by considering what happens to an area when one (or both) of the dimensions is changed: If the base of the triangle is AD and the height is equivalent to CD, the triangle would be half the rectangle. If the base is AD, but the height is half, the area of the triangle would be 1/4 (1/2 of 1/2). If the base and the height are both half of the rectangle, then it is 1/8 (1/2 of 1/4).

2 years ago
Julia Tan

hi hi. this ques is from which level? thanks

2 years ago
Adaik Valli

P 6.

2 years ago