(T3W10) Algebra: Factorisation using Cross Method - Concluding Quiz

Quiz: 2 September 2011 (Friday) 0600h to 3 September 2011 (Saturday) 2359h
Click HERE to access Quiz Questions.
Enter your answers in the following Form:

Algebra (T3W9) Challenging Question

Question Issued in Term 3 Week 9 (Pink Handout)
Source: Discovering Mathematics 2A
Chapter 2: Expansion & Factorisation of Algebraic Expressions
Click HERE to see worked solution

6AM Quiz (2011, 16 July): Huge numbers are not big deal!

Which number is larger:
(987 654 324)^2 
or
(987 654 320) x (987 654 328) ?
Justify your answer without the use of calculator.

6AM Quiz (2011, July 09): It's not that complicated...

There is more than one way to evaluate this fraction. What are they?

Describe 2 methods that you could approach this question.

6AM Quiz (2011, June 18): It's about cats and dogs

A dog takes 3 steps to walk the same distance for which the cat takes 4 steps. Suppose 1 step of the dog covers 30 cm. How many centimeters would the cat cover in taking 12 steps?

There are at least 2 methods to solve the above problem.
Describe any 2 methods that leads to the answer.

6 AM Quiz (11 June 2011): There are more than one way...

What number multiplied by itself is equal to the product of 32 and 162?

There are 2 or more ways to solve this problem. Describe at least 2 methods :)

20110305: 6 AM QUIZ (V) Introduction to Chapter 4: Algebra... Crystal Ball Gazing...

http://www.flashlightcreative.co.uk/swf/mindreader/

Could you UNCOVER THE MYSTERY behind the crystal ball?
(in the Algebraic Way!!!)
Submit your Explanation via Comments...

20110212: 6 AM QUIZ (IV) Real Numbers

20110129: 6 AM Quiz (III) Factors & Multiples

• S1-02    Amelia Pang Kay Lee    11    1    1/29/2011 6:57:46    1 error    Q1
• S1-02    Chirla Akhila    12    3    1/29/2011 7:24:01    ALL CORRECT    
• S1-02    Chua Jia En    7    1    1/29/2011 8:49:35    5 errors    Q2, Q4, Q5, Q6, Q12
• S1-02    Tay Ming Yi    10    1    1/29/2011 16:11:56    2 errors    Q6, Q8
• S1-02    Chong Suan Zhuang Mervin    10    1    1/29/2011 10:41:44    2 errors    Q4, Q5
• S1-02    joshua tan teik ann    8    1    1/29/2011 8:37:39    4 errors    Q2, Q3, Q4, Q12
• S1-02    leighton wang hanrui    5    1    1/30/2011 22:03:34    7 errors    Q2, Q3, Q4, Q5, Q8, Q10, Q12
• S1-02    Ng Zheng Nan Ben    8    1    1/30/2011 14:28:59    4 errors    Q3, Q4, Q5, Q8
• S1-02    Ryan Yeo    9    1    1/29/2011 12:15:14    3 errors    Q2, Q3, Q5
• S1-02    siddharth gohil    9    1    1/29/2011 8:15:27    3 errors    Q2, Q5, Q12

~~~~~~~~~~~~~~~
Answers to QUIZ Word Problems #1 to #5

1. 14 tables in each row

• Use square root

2. 15625 cubes

• 1. Convert the lengths to common unit (i.e. cm)
• 2. Find the number of small cubes that can be lined up along the side.
• 150/6 = 25 cubes per side
• No. of cubes = 25^3 = 15625

3. 14352 cubes

• 1. Find HCF, hence the common factor of no. of cubes could be lined up along the sides.
• 2. Calculate the no. of cubes for each side by dividing the length by the 'length of the smaller cube'.
• 3. Hence the total number of cubes.
• HCF of 312, 184, 128 is 8
  No. of cubes by the length = 39
  No. of cubes by the breadth = 23
  No. of cubes by the height = 16
  Total no. of cubes = 14352

4. 64 m

• 1. Find area of the triangle
• 2. Using the area, find the length of square
• 3. Find perimeter
• Area of triangle = 256
  Length of square = sqrt(256) = 16
  Perimeter = 64

5. Date: 15 April 2011

• 1. Find LCM
• 2. Count from the day after 1 Jan 2011
LCM of 8, 13 = 104 Jan = 31-1 = 30 days (reason being both planes took off on 1 Jan, so we start counting from 2 Jan); Feb = 28 days; Mar = 31 days Total = 89 days (short of 15 days)

20110122: 6 AM Quiz (II) Factors and Multiples

Submissions received up to 23 Jan (Sunday) 0800h

1. S1-02    1/22/2011 6:26:34    Ryan Sio     2 errors    Q2, Q6
2. S1-02    1/22/2011 6:45:49    Amelia Pang Kay Lee    3 errors    Q2, Q7, Q8
3. S1-02    1/22/2011 6:55:35    Daniel Lee Ren Hui    2 errors    Q5, Q8
4. S1-02    1/22/2011 7:02:51    Ryan Yeo    1 error    Q6
5. S1-02    1/22/2011 7:39:03    siddharth gohil    1 error    Q5
6. S1-02    1/22/2011 7:40:23    Tay Ming Yi    3 errors    Q5, Q7, Q8
7. S1-02    1/22/2011 7:43:54    Chua Jia En    ALL CORRECT [2 bonus pts]  
8. S1-02    1/22/2011 8:05:35    Chirla Akhila    3 errors    Q2, Q6, Q8
9. S1-02    1/22/2011 8:42:45    Joshua Tan Teik Ann    1 error    Q6
10. S1-02    1/22/2011 9:00:57    Devanshi Patidar    4 errors    Q2, Q5, Q7, Q8
11. S1-02    1/22/2011 9:54:43    leighton wang hanrui    4 errors    Q3, Q4, Q7, Q8
12. S1-02    1/22/2011 10:02:15    Eugene Voo    4 errors    Q1, Q6, Q7, Q8
13. S1-02    1/22/2011 13:50:51    Tan Lin Dawn    2 errors    Q2, Q8
14. S1-02    1/22/2011 15:26:29    Luke-john lee suen keat    ALL CORRECT   
15. S1-02    1/22/2011 18:24:46    Ng Zheng Nan Ben    2 errors    Q7
16. S1-02    1/22/2011 20:33:39    Chong Suan Zhuang Mervin    ALL CORRECT   
17. S1-02    1/23/2011 14:56:47    Christabel Chan    2 errors    Q1, Q5
18. S1-02    1/23/2011 16:54:04    Max Kaung Myat Thu    3 errors    Q4, Q5, Q6
19. S1-02    1/24/2011 5:21:15    Kashyap shroff    2 errors    Q2, Q7
20. S1-02    1/25/2011 15:55:58    Cowan Ho    2 errors    Q5, Q7

20110115: 6 AM Quiz (I) Number Puzzles

 Up to 2011, January 16: Entries received from...

• 1/15/2011 6:36:07 Chirla Akhila
• 1/15/2011 6:42:09 Amelia Pang Kay Lee
• 1/15/2011 6:44:44 Tay Ming Yi
• 1/15/2011 6:57:59 Eugene Voo
• 1/15/2011 6:59:02 kashyap shroff
• 1/15/2011 7:04:52 Daniel
• 1/15/2011 7:14:05 Christabel Clare Chan Mei Yun
• 1/15/2011 8:09:15 siddharth gohil
• 1/15/2011 9:31:16 Chua Jia En
• 1/15/2011 10:36:26 Luke-John Lee
• 1/15/2011 11:54:49 leighton wang hanrui
• 1/15/2011 12:05:35 Chong Suan Zhuang Mervin
• 1/15/2011 15:14:09 Tan Lin Dawn
• 1/15/2011 15:40:07 Ng Zheng Nan Ben
• 1/15/2011 20:21:24 Max Kaung Myat Thu
• 1/16/2011 12:24:19 Joshua Tan Teik Ann