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Cornerstone Dec 13 - 19 25 questions
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Monday 13 December 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄7 + 3⁄4

    Answer: 29⁄28
  2. 2. Algebra

    Solve: 5x - 12 = 23

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 13.42cm
  4. 4. Ratio

    Share 35 in the ratio 2:3

    Answer: 14 and 21
  5. 5. Statistics

    Calculate the mean of: 14, 47, 10, 48, 13, 41. Give your answer to 2 decimal places

    Answer: 28.83

Tuesday 14 December 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄6 + 1⁄5

    Answer: 7⁄10
  2. 2. Algebra

    Solve: 7x - 6 = 99

    Answer: x = 15
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 12.21cm
  4. 4. Ratio

    Divide 120 in the ratio 3:2:1

    Answer: 60, 40 and 20
  5. 5. Statistics

    Find the mean of: 5, 24, 11, 20

    Answer: 15

Wednesday 15 December 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄6 + 2⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 3x + 8 = 23

    Answer: x = 5
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio

    Divide 150 in the ratio 2:1:2

    Answer: 60, 30 and 60
  5. 5. Statistics

    Calculate the mean of: 45, 6, 44, 22, 6, 5, 23. Give your answer to 2 decimal places

    Answer: 21.57

Thursday 16 December 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄5 + 2⁄4

    Answer: 7⁄10
  2. 2. Algebra

    Solve: 7x + 12 = 75

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 15.65cm
  4. 4. Ratio

    Divide 182 in the ratio 2:2:3

    Answer: 52, 52 and 78
  5. 5. Statistics

    Calculate the mean of: 24, 8, 49, 14, 12, 5, 20, 15. Give your answer to 2 decimal places

    Answer: 18.38

Friday 17 December 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄5 + 2⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 3x - 11 = 1

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 14.14cm
  4. 4. Ratio

    Divide 230 in the ratio 3:3:4

    Answer: 69, 69 and 92
  5. 5. Statistics

    Find the mean of: 7, 14, 8, 11, 15

    Answer: 11