### 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

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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)