Q&A - P3 Math

[Yerdua]

Hi mathsizzzfun,


Thanks for ur prompt and clear reply!

Went to google for the answer and got even more blur cos of the two '2's. Thanks a lot!

[chloecube]

Yerdua:

Hi mathsizzzfun,


Thanks for ur prompt and clear reply!

Went to google for the answer and got even more blur cos of the two '2's. Thanks a lot!

:imcool: this is like buying 4D...

[Yerdua]

Another qns :oops:


Ms Lee buys some sweets.
If she gives each pupil 5 sweets, she is left with 16 sweets.
If she gives each pupil 8 sweets, she is short of 5 sweets.
How many pupils does Miss Lee have?

Thanks!!

[Sun_2010]

Between case 1 and 2

the no of excess sweets each pupil gets = 8-5 = 3

This excess is provided by the 16 extra in case 1
and the 5 short in case 2 = 16+5= 21

therefore, No of pupil = 21 divided by 3 = 7

Hope my explanation is clear

[Yerdua]

Hi sun_2010,


I got ur explanation after some thinking. It’s like alegbra.
Can I do this qn via model as ds is unlikely to understand it…

Thks thks!

[HAPPYH]

Sun_2010:

Between case 1 and 2

the no of excess sweets each pupil gets = 8-5 = 3

This excess is provided by the 16 extra in case 1
and the 5 short in case 2 = 16+5= 21

therefore, No of pupil = 21 divided by 3 = 7

Hope my explanation is clear

I think this is the olympiad method.

[Yerdua]

WCW:

Yerdua:

Another qns :oops:


Ms Lee buys some sweets.
If she gives each pupil 5 sweets, she is left with 16 sweets.
If she gives each pupil 8 sweets, she is short of 5 sweets.
How many pupils does Miss Lee have?

Thanks!!

http://i44.tinypic.com/15ezrtl.jpg\">

Why didnt i think of guess and check method!? Thks thks to all kind folks!

[peapot]

Hi parents,


This question may be asked before but how do I teach my kid on long division with missing digit?

Example : 8_3 / 5 - 168 R3

How do i arrive at the answer for the blank?

[smartmummy]

peapot:

Hi parents,


This question may be asked before but how do I teach my kid on long division with missing digit?

Example : 8_3 / 5 - 168 R3

How do i arrive at the answer for the blank?

Is that 8_3/5=168R3
168 is the quotient
3 is the remainder
168*5=840
840+3=843
so the answer is 4

[peapot]

Oh!! Thanks! Thanks! Another question, for P3 Level is it usually just to find 1 missing digit? Will the kid be tested on 2 missing digit instead of 1?