P2 Math - General Discussion

[plum-cake]

Muffins:

Hi BigDevil, if they aren't taught negative numbers yet, then one other patttern i can see is that from 100 to 300, the pattern is x × 2 + 100, and from 300 to 500, the pattern is x × 2 - 100


So, maybe the answer for the first one is x × 2 - 100 = 100

So 2x = 200

Therefore, x = 100

So maybe the pattern is, using my formula:

100, 100, 300, 500, 1100, 2100

Hi Muffins

If it is from p1/2 question, then can we teach or give the explenation using x and formulas?

[BigDevil]

I think what Muffins came up with is too complicated for a P2, no?


And they just started learning additions and subtractions of 3 digits numbers…Muffins’ solution went up to 4 digits!

[janet88]

BigDevil:

I think what Muffins came up with is too complicated for a P2, no?


And they just started learning additions and subtractions of 3 digits numbers...Muffins' solution went up to 4 digits!

For P1, the kids are expected to know up to 100, 1000 for P2 and 10,000 for P3.

[Muffins]

plum-cake:

Muffins:

Hi BigDevil, if they aren't taught negative numbers yet, then one other patttern i can see is that from 100 to 300, the pattern is x × 2 + 100, and from 300 to 500, the pattern is x × 2 - 100


So, maybe the answer for the first one is x × 2 - 100 = 100

So 2x = 200

Therefore, x = 100

So maybe the pattern is, using my formula:

100, 100, 300, 500, 1100, 2100

Hi Muffins

If it is from p1/2 question, then can we teach or give the explanation using x and formulas?

That was the only method i could think of at the moment which did not involve negative numbers... so dunno leh :stupid:

[Muffins]

BigDevil:

I think what Muffins came up with is too complicated for a P2, no?


And they just started learning additions and subtractions of 3 digits numbers...Muffins' solution went up to 4 digits!

True that BigD http://www.postimage.org/

[BigDevil]

I emailed DD's Maths teacher about it, and he confirmed that the answer is indeed -100.


He said the question is meant to be an exposure to -ve numbers for the
student, and I should not be overly concerned if DD didn't get it right.

[plum-cake]

Hi Big D

Thanks for letting us know the answer.

[janet88]

Instead of starting another thread for Maths assessment books, maybe we can give each other some tips on useful titles.


*Shaping Maths. Maths Builder. By Agatha Goh (MC)
*Fan Math. i-Excel Heuristic & Model Approach. Li Fanglan

[Yong HL]

janet_lee88:

Instead of starting another thread for Maths assessment books, maybe we can give each other some tips on useful titles.


*Shaping Maths. Maths Builder. By Agatha Goh (MC)
*Fan Math. i-Excel Heuristic & Model Approach. Li Fanglan

I am also using the Fan Maths CA/SA book. In addition, i also use the following for weekly practice:
* Primary 1A & B Longman Practice My Weekly Companion Maths, By Alan Tan Boon Wah
* Primary 1 Longman Topical Tests For Maths, By Alan Tan Boon Wah

[plum-cake]

Yong HL:

I am also using the Fan Maths CA/SA book. In addition, i also use the following for weekly practice:
* Primary 1A & B Longman Practice My Weekly Companion Maths, By Alan Tan Boon Wah
* Primary 1 Longman Topical Tests For Maths, By Alan Tan Boon Wah

I have Fan Maths CA/SA book this book too. last year I bought conquer math test papers(p1). but this time I couldn find it. if anybody see that in popular pls let me know the branch.

Thank you.