Q&A - P3 Math

[Taurus]

Hi,


Need help to solve this qns :

Qns : Ming Hao had twice as many stamps as Yiling. After Ming Hao sold 80 of his stamps, Yiling had 3 times as many stamps as him. How many stamps did Ming Hao have at first?

[mother777]

Taurus:

Hi,


Need help to solve this qns :

Qns : Ming Hao had twice as many stamps as Yiling. After Ming Hao sold 80 of his stamps, Yiling had 3 times as many stamps as him. How many stamps did Ming Hao have at first?

let me try (sorry unable to draw model and upload as working now)

Before:
Ming Hao = 2 unit
Yiling = 1 unit

After
MingHao = 1 part (80 as is given away, easy to represent in model)
Yiling = 3 part

from this we can see that

1 unit = 3 part

5 part = 80
1 part = 16
Yiling = 3 x 16 = 48
MingHao = 2 x Yiling = 2 x 48 = 96

hope my working is correct :xedfingers:

[SAHM Chew]

Taurus:

Hi,


Need help to solve this qns :

Qns : Ming Hao had twice as many stamps as Yiling. After Ming Hao sold 80 of his stamps, Yiling had 3 times as many stamps as him. How many stamps did Ming Hao have at first?

http://i39.tinypic.com/5be2h3.jpg\">

[mother777]

SAHM Chew:

Taurus:

Hi,


Need help to solve this qns :

Qns : Ming Hao had twice as many stamps as Yiling. After Ming Hao sold 80 of his stamps, Yiling had 3 times as many stamps as him. How many stamps did Ming Hao have at first?

http://i39.tinypic.com/5be2h3.jpg\">

Beautiful drawing :rahrah:

[plum-cake]

buds:

I don't think it's OT leh. :politebleah:


These are still relevant points/issues pertaining to academic preparation and support for P3 Math. I was going to post the remedies.. some strategies.. that we can all share to minimize the issues our children or rather... WE... are facing now. Still not to late to rectify n trouble shoot for P3 SA1. Tio bo? It's considered support right? :please:

As for preparation part, we are preparing other parents in lower primary to prepare for the big P3 shock... err... transition maybe a better word.

Can don't move to personal thread, cos later lagi susah to make any relevance whatsoever. At least here we are still very much in discussion on what challenges our children face in Math. P3 Math. Pwetty pweeeaaase? :please:

Hi Buds,
Thank you and please carry on. Its only how to answer/ answering technique for math Qs. couple of weeks ago my mind was really thinking that she was having some kind of problem but now I am a bit confident. she is not the only one, so she can over come this problem.

thank you ladies for sharing...

[Taurus]

SAHM Chew:

Taurus:

Hi,


Need help to solve this qns :

Qns : Ming Hao had twice as many stamps as Yiling. After Ming Hao sold 80 of his stamps, Yiling had 3 times as many stamps as him. How many stamps did Ming Hao have at first?

http://i39.tinypic.com/5be2h3.jpg\">

Thank you ladies for helping me to solve, i'm rather weak in models so dun knw how to draw and explain to him though know the answer...

[peapot]

Hi SAHMchew


Why does 80 occupy 2 boxes of yiling? And not just 1 box?

[SAHM Chew]

peapot:

Hi SAHMchew


Why does 80 occupy 2 boxes of yiling? And not just 1 box?

Hmm, I do not quite understand your question. Yiling was cut into 3 small units as after Ming Hao sold 80 of his stamps, Yiling had 3 times as many stamps as him. There are no changes to Yiling's number of stamps. So, we had to cut Yiling 's big unit into 3 smaller units.

[peapot]

After studying the model again, I think I sort of get it already. Thks.

[FRKeon]

Can I know how do we coach our kids for division with the Quotient and Remainder thing by using our 80s’ method?