Q&A - P3 Math

[raysusan]

MathIzzzFun:

raysusan:

please help me on this Qns


jean's age was 3/4 lily's age 20 years ago. jean's age was 7/9 lily's age 16 years ago. how old is lily now??

TIA :?:

Hi raysusan,

hope this helps

http://i54.tinypic.com/qzr8qw.jpg\">

cheers.

thanks you so much for your help. :thankyou:

[MathIzzzFun]

raysusan:

MathIzzzFun:

[quote=\"raysusan\"]please help me on this Qns


jean's age was 3/4 lily's age 20 years ago. jean's age was 7/9 lily's age 16 years ago. how old is lily now??

TIA :?:

Hi raysusan,

hope this helps

http://i54.tinypic.com/qzr8qw.jpg\">

cheers.

thanks you so much for your help. :thankyou:[/quote]u r welcome

cheers.

[Jenlimtz]

Hi


How to solve the below using models?

1) Mrs Kim has a string 407cm long. She used 80.6cm of the string to tie some old newspaper. She used some of the remaining string to tie 7 parcels. She had 21.9cm of string left. If she used equal length of string to tie up each parcel, find the length of string she used to tie up each parcel.

2) The total cost of 5 rulers and 2 books was $18. If 2 books cost as much as 5 rulers, what was the cost of 5 books?

TIA.

[corneyAmber]

http://i53.tinypic.com/2jetjtc.jpg\">

[corneyAmber]

http://i54.tinypic.com/onyar.jpg\">

[Dharma]

raysusan:

please help me on this Qns


jean's age was 3/4 lily's age 20 years ago. jean's age was 7/9 lily's age 16 years ago. how old is lily now??

TIA :?:

20 yrs ago
Diff in age = 4u – 3u = 1u

16 yrs ago
Diff in age = 9p – 7p = 2p
Difference in age between 2 persons is always the SAME.
1u = 2p
3u + 4 = 7p
6p + 4 = 7p
1p = 4
Jane’s age now = 9p + 16 = 36 + 16 = 52 yrs old

[ozora]

hi wonder anyone could help me with these problems?

1) A group of 24 children sold some tickets for a charity show. Each ticket was sold at $5. Each boy sold 5 tickets while each girl sold 3 tickets. The boyus collected $40 more than the girls.
a) How many girls were there in the group?
b) how many tickets were sold together?

2) 30 pupils shared a box of sweets. Each girl received 4 sweets and eeach boy received 5 sweets. If the girl received 30 more sweets than the boys, how many girls were there?
I made assumption that all are boys and used value * unit. but i got stuck.
anyone can help?

[tianzhu]

Hi ozora


There is a similar type of question found on page 71 of this thread.

There are 44 cars & bicycles.
There are 128 more car wheels than bicycles.
How many car and bicycle are there?

It may help you to answer your questions.

http://www.kiasuparents.com/kiasu/forum/viewtopic.php?f=27&t=149&start=700

Best wishes

[ozora]

tianzhu:

Hi ozora


There is a similar type of question found on page 71 of this thread.

There are 44 cars & bicycles.
There are 128 more car wheels than bicycles.
How many car and bicycle are there?

It may help you to answer your questions.

http://www.kiasuparents.com/kiasu/forum/viewtopic.php?f=27&t=149&start=700

Best wishes

thanks. I realised my mistakes and got the answers. cheers

[Champion]

Need help with the P3 Maths Q - sorry if this Q has been asked before but my mind not working :?: :?:


Mary has $12 less than Jane and $18 less than Irene.
They have a total of $102 altogether.
How much does Mary have?

How to I draw model on this type of Q? :thankyou: :thankyou: