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Cornerstone Jun 27 - Jul 3 25 questions
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Monday 27 June 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 6⁄7

    Answer: 32⁄21
  2. 2. Algebra

    Solve: 3x - 17 = 19

    Answer: x = 12
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio

    Divide 77 in the ratio 3:1:3

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

    Find the mean of: 16, 3, 5

    Answer: 8

Tuesday 28 June 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄7 + 2⁄3

    Answer: 29⁄21
  2. 2. Algebra

    Solve: 5x - 13 = 22

    Answer: x = 7
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio

    Divide 120 in the ratio 3:4:3

    Answer: 36, 48 and 36
  5. 5. Statistics

    Find the mean of: 17, 6, 7

    Answer: 10

Wednesday 29 June 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄7 + 2⁄7

    Answer: 3⁄7
  2. 2. Algebra

    Solve: 6x + 3 = 57

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 14.32cm
  4. 4. Ratio

    Divide 189 in the ratio 2:4:3

    Answer: 42, 84 and 63
  5. 5. Statistics

    Calculate the mean of: 10, 24, 21, 8, 25, 15, 7. Give your answer to 2 decimal places

    Answer: 15.71

Thursday 30 June 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄8 + 3⁄8

    Answer: 5⁄8
  2. 2. Algebra

    Solve: 3x + 3 = 36

    Answer: x = 11
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio

    Divide 96 in the ratio 1:3:4

    Answer: 12, 36 and 48
  5. 5. Statistics

    Calculate the mean of: 33, 19, 28, 5, 47, 27, 39, 39. Give your answer to 2 decimal places

    Answer: 29.63

Friday 1 July 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 2⁄6

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 7x - 5 = 58

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 15cm

    Answer: 17cm
  4. 4. Ratio

    Divide 108 in the ratio 2:1:3

    Answer: 36, 18 and 54
  5. 5. Statistics

    Calculate the mean of: 21, 12, 40, 23, 46, 36. Give your answer to 2 decimal places

    Answer: 29.67