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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**
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)

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