Q&A - PSLE Math

[kuts]

Hi Tianzhu, cld you pl help me solve this sum as well


18x cents when converted to dollars is $_____________

Tks in advance

[charsen]

kuts:

Hi Tianzhu, cld you pl help me solve this sum as well


18x cents when converted to dollars is $_____________

Tks in advance

The answer is $0.18x.When it comes to dollars,shift the decimal point two times regardless of x.Thus,the answer is $0.18x.

[charsen]

kuts:

A B C D


2 3 4 5
9 8 7 6
10 11 12 13

If this pattern continues, in which column will number 801 appear?

Please help!

A B C D
R1 2 3 4 5
R2 9 8 7 6
R1 10 11 12 13
R2 17 16 15 14
R1 18 19 20 21
R2 25 24 23 22
Notice that the multiples of 8 is appearing on Column B.
If you get any remainders when you divide a number by 8,the list below shows:
A--Remainder 1 or 2
B--Remainder 3 or 0
C--Remainder 4 or 7
D--Remainder 5 or 6

801/8 will give a remainder1.
So,it will appear in column A.
Cheers

[kuts]

Thanks you charsen for the detailed explanation.

[Michaelia0816]

tianzhu:

Michaelia0816:

2) A forty- page newspaper, which consists of only one section, has a sheet with page 9 and page 10 missing. What other pages are missing?

Pls done it by today as I am going to have math prelim the next day~.~

Hi

Try to see a pattern.This will help you in solving this question.

If you need the solution, please let me know.I'll try to do the slide tomorrow.

Best wishes

I need the solution, I tried to do the soltion, is it very multiple of 9 and 10 is removed, I do not really understand what it meant.
:salute: Please help, ^.^

[tianzhu]

Michaelia0816:

I need the solution, I tried to do the soltion, is it very multiple of 9 and 10 is removed, I do not really understand what it meant.
:salute: Please help, ^.^

Hi

Please refer to page 775 of this thread for the solutions.

Best wishes

[dora miscq]

Alice, Ben,Catherine and Dino donated some money to the Red Cross.

The ratio of the amount donated by Alice to the total amount donated by Ben, Catherine and Dino was 1 : 7.
Ben donated 5/11 as much as the total donated by Alice, Catherine and Dino.
Catherine donated 60% of the amount donated by Alice, Ben and Dino.
If Ben donated $120 more than Dino, what was the total amount donated by the 4 pupils?

[MathIzzzFun]

dora miscq:

Alice, Ben,Catherine and Dino donated some money to the Red Cross.

The ratio of the amount donated by Alice to the total amount donated by Ben, Catherine and Dino was 1 : 7. --> total 8
Ben donated 5/11 as much as the total donated by Alice, Catherine and Dino. --> total 16
Catherine donated 60% of the amount donated by Alice, Ben and Dino.
--> 3:5 --total 8
If Ben donated $120 more than Dino, what was the total amount donated by the 4 pupils?

Total amount donated is the same.

A: A+B+C+D = 1:8 --> 2u : 16u
B: A+B+C+D --> 5u : 16u
A+B+C+D = 3: 8 --> 6u : 16u
A:B:C:D --> 2u: 5u : 6u: (16u-6u-5u-2u) --> 2u : 5u : 6u : 3u -- total 16u

B donated $120 more than D,
2u --> $120
16u --> $960

Total amount donated = $960

cheers.

[Tiramisu Coco]

tianzhu:

Tiramisu Coco:

Hi Tianzhu, thks for your reply.

This qtn has not been discussed before, think u refer to the wrong qtn on the photostream. It's the last item abt ABCD is a square of 20cm. E & F are the mid-points of AB & AD. Find area of shaded region.
Would appreciate your help for this qtn. TIA

Hi

When I clicked on your link, all I could see was a circle inscribed in a triangle.

Based on your description, perhaps this question may help.

Q15 of this paper, please go to page 35 of this link.

http://www.orlesson.org/orp/10Ma/2010-P6-Math-SA2-Rosyth.pdf


Best wishes.

http://farm5.staticflickr.com/4103/5037820252_8aa41e056c_z.jpg\">

Gd morning, tianzhu! Thks for the reply. I used similar approach to solve my qtn but still not able to get the ans given: 266 2/3 cm2. Can guide me the steps to solve? Thk u.

[Tiramisu Coco]

Hi tianzhu, here's the link to the qtn. TIA


http://m.flickr.com/#/photos/82618212@N07/7837766706/