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Cornerstone Oct 29 - Nov 4 25 questions
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Monday 29 October 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄7 + 4⁄8

    Answer: 15⁄14
  2. 2. Algebra

    Solve: 5x + 13 = 33

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 12.65cm
  4. 4. Ratio

    Divide 120 in the ratio 1:3:4

    Answer: 15, 45 and 60
  5. 5. Statistics

    Calculate the mean of: 18, 24, 32, 16, 36, 24, 15, 23

    Answer: 23.5

Tuesday 30 October 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄5 + 1⁄6

    Answer: 29⁄30
  2. 2. Algebra

    Solve: 6x + 8 = 44

    Answer: x = 6
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio

    Divide 136 in the ratio 1:1:2

    Answer: 34, 34 and 68
  5. 5. Statistics

    Calculate the mean of: 42, 48, 43, 43, 18, 43, 21. Give your answer to 2 decimal places

    Answer: 36.86

Wednesday 31 October 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄11 + 3⁄11

    Answer: 9⁄11
  2. 2. Algebra

    Solve: 4x - 7 = 41

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 11.66cm
  4. 4. Ratio

    Divide 96 in the ratio 1:3:4

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

    Find the mean of: 8, 10, 3

    Answer: 7

Thursday 1 November 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄12 + 3⁄12

    Answer: 5⁄12
  2. 2. Algebra

    Solve: 3x - 20 = -5

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 13.34cm
  4. 4. Ratio

    Divide 136 in the ratio 4:1:3

    Answer: 68, 17 and 51
  5. 5. Statistics

    Calculate the mean of: 11, 7, 9, 14, 36, 9, 17, 46. Give your answer to 2 decimal places

    Answer: 18.63

Friday 2 November 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄4 + 1⁄3

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 4x - 13 = 11

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 200 in the ratio 2:2:1

    Answer: 80, 80 and 40
  5. 5. Statistics

    Calculate the mean of: 9, 36, 14, 23, 28, 8. Give your answer to 2 decimal places

    Answer: 19.67