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Cornerstone Jul 26 - Aug 1 25 questions
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Monday 26 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄6 + 1⁄7

    Answer: 41⁄42
  2. 2. Algebra

    Solve: 4x - 20 = 40

    Answer: x = 15
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 14.56cm
  4. 4. Ratio

    Share 65 in the ratio 3:2

    Answer: 39 and 26
  5. 5. Statistics

    Calculate the mean of: 19, 15, 10, 9, 24, 41, 48. Give your answer to 2 decimal places

    Answer: 23.71

Tuesday 27 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄8 + 3⁄8

    Answer: 7⁄8
  2. 2. Algebra

    Solve: 3x + 13 = 46

    Answer: x = 11
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio

    Share 52 in the ratio 1:3

    Answer: 13 and 39
  5. 5. Statistics

    Find the mean of: 4, 16, 19

    Answer: 13

Wednesday 28 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄7 + 2⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: 3x + 8 = 41

    Answer: x = 11
  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 2:1

    Answer: 38 and 19
  5. 5. Statistics

    Find the mean of: 6, 14, 10, 14

    Answer: 11

Thursday 29 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄6 + 1⁄5

    Answer: 13⁄15
  2. 2. Algebra

    Solve: 2x - 14 = 14

    Answer: x = 14
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 7.21cm
  4. 4. Ratio

    Share 25 in the ratio 1:4

    Answer: 5 and 20
  5. 5. Statistics

    Calculate the mean of: 29, 49, 15, 26, 47, 41, 6, 24. Give your answer to 2 decimal places

    Answer: 29.63

Friday 30 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 5⁄7

    Answer: 29⁄21
  2. 2. Algebra

    Solve: 2x - 9 = 19

    Answer: x = 14
  3. 3. Geometry

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

    Answer: 41cm
  4. 4. Ratio

    Share 42 in the ratio 1:2

    Answer: 14 and 28
  5. 5. Statistics

    Calculate the mean of: 23, 38, 27, 30, 36, 19, 43. Give your answer to 2 decimal places

    Answer: 30.86