Q&A  PSLE Math
 Dragon Flame
 OrangeBelt
 Posts: 90
 Joined: Thu Oct 16,
Re: Q&A  PSLE Math

Last edited by Dragon Flame on Thu Jul 23, 2015 11:49 pm, edited 1 time in total.
 Dragon Flame
 OrangeBelt
 Posts: 90
 Joined: Thu Oct 16,
 Dragon Flame
 OrangeBelt
 Posts: 90
 Joined: Thu Oct 16,
Re: Q&A  PSLE Math

Last edited by Dragon Flame on Thu Jul 23, 2015 11:48 pm, edited 1 time in total.
 Swift Formula
 BlueBelt
 Posts: 246
 Joined: Thu Jun 25,
 Total Likes:2
Re: Q&A  PSLE Math
By finding the area of triangle AOB, we can get Square ABCD (4x) and AOBT (2X)Dragon Flame wrote:
Please help. Tks in adv !
Triangle AOB = 1/2 X 7 X7 = 24.5 cm2
ABCD = 98cm2
AOBT = 49cm2
Area of circle = 22/7 X 7 X 7 = 154cm2
Area of the unshaded portion inside triangle ABT = (154  98)/4 = 14cm2
Area of shaded region = (3X14) + 49  14 = 77cm2
Re: Q&A  PSLE Math
InitiallyDragon Flame wrote:
Please Help. Tks in adv !
M : J = > 120 : 100
M : P => 100 : 60 = > 120:72 , Let's make Mary common for both ratio.
M:J:P => 12072 => All common units.
Peter increased by 50%, i,e, he will recieved 36u from Peter mary.
Ratio given by M : J : Total = >1:2: 3
=> 12u: 24u : 36u
finally John has 100u24u = 76u
Peter has 72 + 36 = 108u
Peter  John =96=108u76u
96=32u
u = 3
Maru gave 12u = 12(3) = 36 books.
Re: Q&A  PSLE Math
Help pls!
Adam has 3 times as many red stamps as Xinlong and 6 blue stamps.
Cindy has 1/6 the number of red stamps that Adam has and 3 blue stamps.
Cindy has 4 stamps fewer than Xinlong.
(a) how many stamps do they have altogether?
(b) how many stamps must Adam give Xinlong so that they will the same number of stamps?
Adam has 3 times as many red stamps as Xinlong and 6 blue stamps.
Cindy has 1/6 the number of red stamps that Adam has and 3 blue stamps.
Cindy has 4 stamps fewer than Xinlong.
(a) how many stamps do they have altogether?
(b) how many stamps must Adam give Xinlong so that they will the same number of stamps?
Re: Q&A  PSLE Math
Does Xinlong has any blue stamps?ttlkbs wrote:Help pls!
Adam has 3 times as many red stamps as Xinlong and 6 blue stamps.
Cindy has 1/6 the number of red stamps that Adam has and 3 blue stamps.
Cindy has 4 stamps fewer than Xinlong.
(a) how many stamps do they have altogether?
(b) how many stamps must Adam give Xinlong so that they will the same number of stamps?
 Swift Formula
 BlueBelt
 Posts: 246
 Joined: Thu Jun 25,
 Total Likes:2
Re: Q&A  PSLE Math
I think Setter makes red and blue to let students see "3units +6" onlyEnder wrote: Does Xinlong has any blue stamps?