Q&A - P4 Math

[MathIzzzFun]

racoon12:

MathIzzzFun:

[quote=\"started to be kiasu\"]Can somebody help me with this question? TIA


Jenny had 3/7 as much money as Kenny. If they spent $252 each, Jenny's money will be only 2/7 of Kenny's. How much money did Kenny have more than Jenny?

..corrected typo error..

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cheers.

Would like to know how you derive the 520 being amount kenny have more than jenny? Tia.[/quote]..typo error...

cheers

[htn]

BigDevil:

htn:

Hi, need help for the following q:

Sammy is studying for a test. The number of pages he has read is twice as many as the number of pages he has not read. If he reads another 8 pages, the number of pages he has read will become thrice as many as the number of pages he has not read. How many pages are there in the science textbook?
TIA

http://i46.tinypic.com/2mwgux4.jpg\">

Hi, BigDevil

Thanks, are there other methods to solve this q?

[MathIzzzFun]

htn:

Hi, need help for the following q:

Sammy is studying for a test. The number of pages he has read is twice as many as the number of pages he has not read. If he reads another 8 pages, the number of pages he has read will become thrice as many as the number of pages he has not read. How many pages are there in the science textbook?
TIA

alternate approach... \"same total\" concept...

http://i47.tinypic.com/2i8xa4y.png\">

cheers.

[doraemo]

Thank you, BigDevil.

[Nebbermind]

WAH!! So many P4 working very hard after the SA2!!

[smartmummy]

Nebbermind:

WAH!! So many P4 working very hard after the SA2!!

May be preparing for SA2? My son's exam starts today.I will post two qns that he got wrong in his practise paper.

[Nebbermind]

Oh, so late!! Thought everyone finished SA2 already.


BTW, the question where the answer is $720....I donch even think GEP were taught...not P4 for sure.

[Jamesbond]

My ds also taking exams still.... :rotflmao:

[optimistforum]

Can someone help, please? P4 DS1 is struggling with mathematical patterns. If 60/15 = 4, how can I get him to see 60/1.5 = 40. Any, online games resources for this?


Thanks.

[ruohoo97]

optimistforum:

Can someone help, please? P4 DS1 is struggling with mathematical patterns. If 60/15 = 4, how can I get him to see 60/1.5 = 40. Any, online games resources for this?


Thanks.

60x10/1.5x10=600/15, since 60/15=4, 4x10=40.

For most of this type question, encourage him to convert to integer first, then do division.