6 AM Quiz: Factors & Multiples



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 = 104Jan = 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 daysTotal = 89 days (short of 15 days)

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