Tutor MathsGuru: Ask me for your burning Maths questions!

[mathsguru]

Daddy:

Dear MathsGuru,


Please help P5 math question.

1. The area of the rectangle ABCD below is 140 cm2.
Area of triangle XYD is 20 cm2.
Find the total shaded area of the rectangle.

http://i222.photobucket.com/albums/dd39/tham33/A.jpg\">

Daddy
Thanks all

Hi Daddy,

Here's my solution!


MathsGuru

http://www.postimage.org/image.php?v=aV78SuJ

[mathsguru]

wkong:

Hi Maths Guru,


i have another Maths question that need helps:

Belinda has a collection of some stamps. If she gave 36 stamps to Samantha, she would have 4 times as many stamps as Samantha. If she gave 23 stamps to Samantha, she would have 5 times as many stamps as Samantha. How many stamps did Belinda have at first?

Thanks.

Hi Wkong,

Here's my solution.


MathsGuru

http://www.postimage.org/image.php?v=TsGPVYi

[mathsguru]

MUMMYOF3:

Hi,


Pls help me with the flwg questions : -

There are altogether 114 beans in bags A, B and C.
There are 8 more beans in bag A than B.
The number of beans in bag C is twice the total number of beans in bags A and B. How many more beans are there in bag C than B ?


Thanks.

Hi Mummyof3,

Here's my solution. Try to let the bag with the least no. of beans be 1 unit.


MathsGuru

http://www.postimage.org/image.php?v=PqiMVQ9

[mathsguru]

wkong:

Hi adhdadhd,


Thanks for the solution.

I have another Maths question:-

James had $6 less than Patrick. Patrick had 4/7 of what Kathy had. When Kathy gave $14 to Patrick and $20 to James, the 3 of them had the same amount of money each.

a) How much money did Patrick have at first?
b) What was the total sum of money the 3 of them had?

Hi Wkong,

Here's my solution.


MathsGuru

http://www.postimage.org/image.php?v=aV7hCKi

[mathsguru]

Jolyn:

Hi Maths Guru


I have the following of 2 questions which needs your help:

1. Zul has 18 sweet. He has thrice as many sweets as Shania. How Many more sweets does Zul have than Shania?

2. A fruit seller sold some fruits on Tuesday morning. He sold 3 times as many oranges as apples. He sold 684 fruits that day.

a) How many oranges did he sell?
b) How many more oranges than apples did he sell?


Thank you very much.....

Hi Jolyn,

Here are my solutions. These are basic questions of model drawing, hope your child can grasp these basics well!

Cheers,
MathsGuru

http://www.postimage.org/image.php?v=gxLlcGJ

http://www.postimage.org/image.php?v=gxLlfaS

[mathsguru]

tinasen:

I'm breaking my head to give a model method solution for this question. I tried to get a solution from some friends but it still doesn't help me understand how to solve it.


Joseph had 5 times as much money as Lyn at first. After their mom gave $1002 to each of them , Joseph had twice as much as Lyn How much did Joseph had at first?

Hi Tinasen,

Here's my solution. Hope it helps!


MathsGuru

http://www.postimage.org/image.php?v=aV7jj_r

[mathsguru]

YLH88:

Hi Mathsguru,


With ref to the following question posted by Firebird, how did you derive the shaded are is 420 cm2 ?

Question 11) In the figure below, not drawn to scale, PQRS is a rectangle with a length of 45 cm and a width of 22 cm. The area of te TUVW is 75 cm2. Find the ratio of the shaded area to the unshaded area.

http://www.postimage.org/image.php?v=Pq46L9A

Thank you very much!

p/s now my ds is practicing the school test paper and come across this question which I recalled you have helped solved the question, but hor, I don't really understand the solution

Hi YLH88,

Apologies! Now that I re-look at my solution, I made a few typos! Must be type till blur already!! Paiseh~~

Here's my corrected solution.

The key thing tested here in the question is the concept of shared base and height of triangles. Does your boy understand how to find the unshaded area (i.e. area of 2 triangles - TUVW)?


MathsGuru

http://www.postimage.org/image.php?v=PqiW1x0

[mathsguru]

starlight1968sg:

Hi mathsguru and others,

I need some help:
(1) P, T and V have 960 beads altogether. P gave some of her beads to T and the number of T's beads was doubled. Then T gave some of her beads to V and the number of V's beads was doubled. If the 3 girls had the same number of beads in the end, how many beads did P have at first.
(ans: 560)
How to solve it?

(2) Look at the pattern below:
Position Number
1st 1
2nd 2
3rd 3
4th 2
5th 3
6th 4
7th 3
8th 4
9th 5
10th 4
11th 5
12th 6
(a) At what position does the number 12 first appear?
(b) What is the sum of the first 32 numbers?

(ans: (a) 30th, (b) 218)

For (a), do we simply write from position 12th till position 30th ie when we first see the number 12?

For (b), the calculations is too lengthy. Is there a method or a pattern one can recognise to simplify the calculation?

MTIA.

Hi Starlight1968sg,

Here're my solutions. Hope they are clear enough!


MathsGuru

http://www.postimage.org/image.php?v=TsHeRKS

http://www.postimage.org/image.php?v=Pqj2b_S

[mathsguru]

Daddy:

Hi mathsguru and others,


I have one difficult question. Pls help thanks. :?

1. IF Vaness gave 12 badges to Jay, both of them would have the same number of badges. If Jay gave 24 badges to Vaness, Vaness would have 5 times as many badges as Jay. How many badges did Vaness have?

Thanks alot
Daddy

Hi Daddy,

Here's my solution!


MathsGuru

http://www.postimage.org/image.php?v=aV7D79S

[mathsguru]

Jolyn:

Hi Maths Guru


I have a few questions and appreciate if you could help:

1. There are 38 red beans and 3 times as many blue beans in a box. How many blue beans are there in 4 such boxes?

2. The florist sold 4 times as many roses as tulips on Valentine's Day. If she sold 260 roses and day, how many roses did the florist sell?

Thank you very much....

Hi Jolyn,

Here're my solutions. I took the liberty to correct the typo in Question 2. Hope it's correct!


MathsGuru

http://www.postimage.org/image.php?v=aV7FxjA

http://www.postimage.org/image.php?v=aV7FzOJ