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Cornerstone Jun 28 - Jul 4 25 questions
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Monday 28 June 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄9 + 6⁄9

    Answer: 8⁄9
  2. 2. Algebra

    Solve: 7x - 13 = 64

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 20cm
  4. 4. Ratio

    Divide 174 in the ratio 1:1:4

    Answer: 29, 29 and 116
  5. 5. Statistics

    Find the mean of: 2, 8, 20, 3, 7

    Answer: 8

Tuesday 29 June 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 7⁄8

    Answer: 29⁄24
  2. 2. Algebra

    Solve: 3x + 11 = 47

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 4cm

    Answer: 5cm
  4. 4. Ratio

    Divide 189 in the ratio 1:4:2

    Answer: 27, 108 and 54
  5. 5. Statistics

    Calculate the mean of: 29, 41, 12, 38, 44, 10

    Answer: 29

Wednesday 30 June 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄7 + 1⁄8

    Answer: 47⁄56
  2. 2. Algebra

    Solve: 4x + 11 = 59

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 126 in the ratio 1:3:2

    Answer: 21, 63 and 42
  5. 5. Statistics

    Calculate the mean of: 41, 28, 16, 21, 31, 42. Give your answer to 2 decimal places

    Answer: 29.83

Thursday 1 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄12 + 9⁄12

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 7x - 9 = 33

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 7.81cm
  4. 4. Ratio

    Divide 240 in the ratio 3:3:4

    Answer: 72, 72 and 96
  5. 5. Statistics

    Calculate the mean of: 45, 10, 50, 48, 9, 16. Give your answer to 2 decimal places

    Answer: 29.67

Friday 2 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄7 + 2⁄8

    Answer: 11⁄28
  2. 2. Algebra

    Solve: 8x - 6 = 82

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 39cm
  4. 4. Ratio

    Divide 216 in the ratio 4:4:1

    Answer: 96, 96 and 24
  5. 5. Statistics

    Calculate the mean of: 47, 30, 26, 40, 32, 19, 42. Give your answer to 2 decimal places

    Answer: 33.71