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Q&A - P5 Math

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geniuskids: YellowBelt; Posts: 25; Joined: Mon Jul 05,

Re: Q&A - P5 Math

Post by geniuskids » Fri Jun 06, 2014 10:22 am

Thank you for your help. Can you please explain this step:

Total remaining number of pages after first day
= 4/3 x 1/2 of total number of pages
= 2/3 of total number of pages

Why is it 4/3 x 1/2?

AdaptiveLearning.sg: YellowBelt; Posts: 25; Joined: Mon Jun 02,

Re: Q&A - P5 Math

Post by AdaptiveLearning.sg » Fri Jun 06, 2014 10:34 am

geniuskids wrote:Thank you for your help. Can you please explain this step:

Total remaining number of pages after first day
= 4/3 x 1/2 of total number of pages
= 2/3 of total number of pages

Why is it 4/3 x 1/2?

3/4 remaining = 1/2 total
1/4 remaining = 1/3 x 1/2
4/4 remaining = 4/3 x 1/2

wi11anna: OrangeBelt; Posts: 66; Joined: Mon Dec 07,; Total Likes:1

Re: Q&A - P5 Math

Post by wi11anna » Fri Jun 06, 2014 3:53 pm

Pls help me with this question. Thank you!

nansk: BrownBelt; Posts: 684; Joined: Fri Apr 09,; Total Likes:10

Re: Q&A - P5 Math

Post by nansk » Sat Jun 07, 2014 7:09 pm

wi11anna wrote:Pls help me with this question. Thank you!

Which sadist designed this word problem?

bb_ mom: KiasuGrandMaster; Posts: 8673; Joined: Mon Nov 25,; Total Likes:14

Re: Q&A - P5 Math

Post by bb_ mom » Sat Jun 07, 2014 8:53 pm

nansk wrote:
wi11anna wrote:Pls help me with this question. Thank you!
Which sadist designed this word problem?

Stopped reading by the time I got to the part about spending money on watch! No wonder DS will

when doing problem sums.

wi11anna: OrangeBelt; Posts: 66; Joined: Mon Dec 07,; Total Likes:1

Re: Q&A - P5 Math

Post by wi11anna » Sun Jun 08, 2014 12:18 am

bb_ mom wrote:
nansk wrote:
wi11anna wrote:Pls help me with this question. Thank you!
Which sadist designed this word problem?
Stopped reading by the time I got to the part about spending money on watch! No wonder DS will when doing problem sums.

Haha...I also

after reading the qn. It's DS's holiday homework from school.

to whoever can help me solve this puzzle.

hweelit: YellowBelt; Posts: 11; Joined: Tue Jul 28,

Re: Q&A - P5 Math

Post by hweelit » Sun Jun 08, 2014 5:23 pm

Hi parents, pls help!

there are 90 more boys than girls at a school funfair. after 80% of the boys and 30% of the girls left the funfair. there were twice as many girls as boys that remained. how many boys were at funfair at first?l