Q&A - PSLE Math

[tianzhu]

Hi anneshirleygilbert


The answers ----- Vanilla sweets: 72 and Chocolate sweets: 138.

For the question on bowls and plates, you may use MD or UM.

Due to time constraints, I’ve posted the solution using UM instead of MD.

Hope this helps.

Best wishes

http://farm8.staticflickr.com/7146/6728816353_e2a7aca824_z.jpg\">

[Bunny27]

tianzhu:

Hi anneshirleygilbert


The answers ----- Vanilla sweets: 72 and Chocolate sweets: 138.

For the question on bowls and plates, you may use MD or UM.

Due to time constraints, I’ve posted the solution using UM instead of MD.

Hope this helps.

Best wishes

http://farm8.staticflickr.com/7146/6728816353_e2a7aca824_z.jpg\">

Hi,
I'm not sure about this question....can someone help me?
Thanks !
A fruit seller had the same number of apples, oranges and pears at first. After he had 90 fruits left. There were 15 fewer pears than apples left. The number of apples left was twice as many as the number of oranges left. How many oranges did he sell?

[Bunny27]

Hi, not sure about this question…can someone help me?

Thanks !
A fruit seller had the same number of apples, oranges and pears at first. After he had 90 fruits left. There were 15 fewer pears than apples left. The number of apples left was twice as many as the number of oranges left. How many oranges did he sell?

[tianzhu]

Bunny27:

Hi,
I'm not sure about this question....can someone help me?
Thanks !
A fruit seller had the same number of apples, oranges and pears at first. After he had 90 fruits left. There were 15 fewer pears than apples left. The number of apples left was twice as many as the number of oranges left. How many oranges did he sell?

Hi

Good Morning.

I guess some information might be missing from your question.

Maybe, it might be something like this, After xx pears and some apples and oranges were sold, he had 90 fruits left.

Please check with your source again.

Best wishes

[Vanilla Cake]

Bunny27:

A fruit seller had the same number of apples, oranges and pears at first. After he had 90 fruits left. There were 15 fewer pears than apples left. The number of apples left was twice as many as the number of oranges left. How many oranges did he sell?

tianzhu:

I guess some information might be missing from your question.
Maybe, it might be something like this, After xx pears and some apples and oranges were sold, he had 90 fruits left.
Please check with your source again.

The above question has missing information and is adapted from the PSLE 2008 Maths exam:

A restaurant had the same number of apples, oranges and pears at first.
After 38 pears, some apples and oranges were used, there were 90 fruits left.
There were twice as many apples as oranges left. The number of pears left was 15 fewer than the number of apples left.
How many oranges were used?

[tianzhu]

Hi


Based on VC’s reply, if your question is written as;

A fruit seller had the same number of apples, oranges and pears at first. After 38 pears, some apples and oranges were sold, there were 90 fruits left. There were 15 fewer pears than apples left. The number of apples left was twice as many as the number of oranges left. How many oranges did he sell?

The answer is 44 oranges.You may use UM or MD.

Since this is similar to a past PSLE question, you should be able to see the solution from the PSLE 5 years series book.

Best wishes

[YumYum]

Hi, I need help for the following Qn:


If the price of a Barbie doll is reduced by 25%, a loss of $1.20 will be incurred.
If its price is reduced by 10%, a profit of $0.30 will be incurred.
Find the loss or profit incurred if a barbie doll is sold for $13.40.

Thank you.

[MathIzzzFun]

YumYum:

Hi, I need help for the following Qn:


If the price of a Barbie doll is reduced by 25%, a loss of $1.20 will be incurred.
If its price is reduced by 10%, a profit of $0.30 will be incurred.
Find the loss or profit incurred if a barbie doll is sold for $13.40.

Thank you.

Hi
15% of sale price--> 1.20+0.30=1.50
So, sale price --> 10.00
cost price --> 75% x 10 + 1.20 = 8.70
$13.40 - $8.70 = $4.70 profit

cheers.

[YumYum]

Dear MathIzzFun,


Thank you and wishing you a happy new year filled with good health n happiness.

[2DMommy]

Please help me with these questions :


1)Daniel and Kester have some pens. If Daniel gives 10 of his pens to Kester, he will have twice as many pens as Kester. If Daniel gives 6 of his pens to him, he will have thrice as many pens as Kester. How many pens does Kester have ?

2)The pages of a book are numbered 1 to 99. Find the difference between the sum of all the odd pages and the sum of all the even pages.

3)The ratio of the number of red apples to the number of green apples in a box is 4 : & . If 18 more apples are added into the box, the number of red apples will be equal to the number of green apples. How many apples are there in the box ?

Thank you !