Q&A - P4 Math

[tianzhu]

smartmummy:

Hi All!

need help on the following qn. :thankyou:
http://i47.tinypic.com/vdzs3p.jpg\">

Hi

PS = 1/6 the perimeter of PQRS

PS = QR + 1 unit
PQ =SR = 2 units

PS = 6 cm

Perimeter of shaded portion = perimeter of PQRS = 2(12+6) = 36cm

Area of rectangle PQRS = 12*6 = 72

72 – 56 = 16

Area of square = 16

Length of square = 4 cm

Best wishes

[smartmummy]

:thankyou:

tianzhu:

smartmummy:

Hi All!

need help on the following qn. :thankyou:
http://i47.tinypic.com/vdzs3p.jpg\">

Hi

PS = 1/6 the perimeter of PQRS

PS = QR = 1 unit
PQ =SR = 2 units

PS = 6 cm

Perimeter of shaded portion = perimeter of PQRS = 2(12+6) = 36cm

Area of rectangle PQRS = 12*6 = 72

72 – 56 = 16

Area of square = 16

Length of square = 4 cm

Best wishes

[Sharmum]

Tian Zhu


:thankyou:

[vsk]

John has thrice as much money as Daisy. After Daisy gave S$14 to John, John had 5 times as much money as Daisy. How much did Daisy have in the end ?


Can someone help to solve this ?

[MathIzzzFun]

vsk:

John has thrice as much money as Daisy. After Daisy gave S$14 to John, John had 5 times as much money as Daisy. How much did Daisy have in the end ?


Can someone help to solve this ?

Hi

At first,
Daisy --> 1 unit + $14
John --> 3 units + $42 (= 3 x $14)

In the end,
Daisy --> 1 unit
John --> 5 units

For John, 5 units --> 3 units + $ 42 + $14
1 unit --> $28

Daisy had $ 28 in the end.

cheers.

[akksen]

Romeo has 500 more game token than James.she gives 300 game token to James.

a)who has more game token now?(Romeo or James)
b)how many more?

[smartmummy]

Deleted

[MathIzzzFun]

akksen:

Romeo has 500 more game token than James.she gives 300 game token to James.

a)who has more game token now?(Romeo or James)
b)how many more?

Hi

http://i45.tinypic.com/2q30l08.png\">

cheers.

[24hr-mum]

there were twice as many blue clips as yellow clips. aft gvg away 66 blue n 8 yellow clips, there were thrice as many yellow as blue clip left. how many clip were there at first? how to do?

[MathIzzzFun]

24hr-mum:

there were twice as many blue clips as yellow clips. aft gvg away 66 blue n 8 yellow clips, there were thrice as many yellow as blue clip left. how many clip were there at first? how to do?

Hi

I will use unit method here, but you can simply convert it into MD.

At first,
Blue : Yellow
--> 2 x (1u + 33) : 1u + 33
--> 2u + 66 : 1u + 33

In the end,
Blue : Yellow --> 1:3
--> 2u : 1u + 25
--> 2u : 6u
So, 5u --> 25, 1u --> 5

At first,
Blue : Yellow --> 76 : 38 -- total 114 clips.

using MD --> http://tinyurl.com/mathizzzfun-2D-120502

cheers.