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Cornerstone Oct 4 - 10 25 questions
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Monday 4 October 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄9 + 4⁄9

    Answer: 7⁄9
  2. 2. Algebra

    Solve: 4x - 12 = 40

    Answer: x = 13
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio

    Share 90 in the ratio 1:2

    Answer: 30 and 60
  5. 5. Statistics

    Find the mean of: 9, 10, 5

    Answer: 8

Tuesday 5 October 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄5 + 4⁄6

    Answer: 13⁄15
  2. 2. Algebra

    Solve: 6x + 13 = 61

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 10.3cm
  4. 4. Ratio

    Share 54 in the ratio 2:1

    Answer: 36 and 18
  5. 5. Statistics

    Calculate the mean of: 10, 9, 20, 13, 18, 30, 38. Give your answer to 2 decimal places

    Answer: 19.71

Wednesday 6 October 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄5 + 2⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 2x + 5 = 19

    Answer: x = 7
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio

    Share 57 in the ratio 1:2

    Answer: 19 and 38
  5. 5. Statistics

    Calculate the mean of: 6, 46, 16, 18, 29, 37. Give your answer to 2 decimal places

    Answer: 25.33

Thursday 7 October 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄6 + 1⁄5

    Answer: 8⁄15
  2. 2. Algebra

    Solve: 6x - 7 = 65

    Answer: x = 12
  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

    Share 15 in the ratio 2:1

    Answer: 10 and 5
  5. 5. Statistics

    Find the mean of: 16, 11, 2, 14, 17

    Answer: 12

Friday 8 October 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 2⁄7

    Answer: 20⁄21
  2. 2. Algebra

    Solve: 6x - 11 = 31

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.81cm
  4. 4. Ratio

    Divide 133 in the ratio 3:1:3

    Answer: 57, 19 and 57
  5. 5. Statistics

    Find the mean of: 2, 14, 5

    Answer: 7