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Cornerstone Mar 28 - Apr 3 25 questions
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Monday 28 March 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄8 + 1⁄8

    Answer: 7⁄8
  2. 2. Algebra

    Solve: 6x - 9 = 51

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 13.42cm
  4. 4. Ratio

    Divide 152 in the ratio 2:3:3

    Answer: 38, 57 and 57
  5. 5. Statistics

    Calculate the mean of: 41, 46, 39, 40, 16, 45, 5, 11. Give your answer to 2 decimal places

    Answer: 30.38

Tuesday 29 March 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 6⁄7 + 1⁄8

    Answer: 55⁄56
  2. 2. Algebra

    Solve: 3x + 14 = 35

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 88 in the ratio 3:1:4

    Answer: 33, 11 and 44
  5. 5. Statistics

    Find the mean of: 13, 19, 4

    Answer: 12

Wednesday 30 March 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 6⁄8 + 2⁄3

    Answer: 17⁄12
  2. 2. Algebra

    Solve: 2x + 11 = 25

    Answer: x = 7
  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 90 in the ratio 1:1:3

    Answer: 18, 18 and 54
  5. 5. Statistics

    Find the mean of: 7, 20, 9

    Answer: 12

Thursday 31 March 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 9⁄11 + 1⁄11

    Answer: 10⁄11
  2. 2. Algebra

    Solve: 2x - 11 = -1

    Answer: x = 5
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio

    Divide 115 in the ratio 1:1:3

    Answer: 23, 23 and 69
  5. 5. Statistics

    Calculate the mean of: 48, 17, 6, 46, 41, 34, 26. Give your answer to 2 decimal places

    Answer: 31.14

Friday 1 April 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄6 + 2⁄5

    Answer: 37⁄30
  2. 2. Algebra

    Solve: 5x - 8 = 57

    Answer: x = 13
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio

    Share 55 in the ratio 1:4

    Answer: 11 and 44
  5. 5. Statistics

    Calculate the mean of: 49, 33, 30, 47, 17, 18. Give your answer to 2 decimal places

    Answer: 32.33