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Cornerstone Jan 3 - 9 25 questions
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Monday 3 January 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄6 + 1⁄6

    Answer: 1⁄3
  2. 2. Algebra

    Solve: 6x + 3 = 63

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 12.53cm
  4. 4. Ratio

    Share 108 in the ratio 2:1

    Answer: 72 and 36
  5. 5. Statistics

    Calculate the mean of: 7, 47, 32, 27, 23, 39. Give your answer to 2 decimal places

    Answer: 29.17

Tuesday 4 January 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 10⁄12 + 1⁄12

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 6x + 10 = 70

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 11.4cm
  4. 4. Ratio

    Divide 168 in the ratio 2:2:3

    Answer: 48, 48 and 72
  5. 5. Statistics

    Find the mean of: 22, 3, 2

    Answer: 9

Wednesday 5 January 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄5 + 4⁄6

    Answer: 19⁄15
  2. 2. Algebra

    Solve: 3x - 8 = 4

    Answer: x = 4
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Divide 140 in the ratio 2:3:2

    Answer: 40, 60 and 40
  5. 5. Statistics

    Calculate the mean of: 6, 38, 30, 22, 6, 15, 45, 47. Give your answer to 2 decimal places

    Answer: 26.13

Thursday 6 January 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 8⁄11 + 1⁄11

    Answer: 9⁄11
  2. 2. Algebra

    Solve: 3x - 5 = 28

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.81cm
  4. 4. Ratio

    Divide 110 in the ratio 4:3:4

    Answer: 40, 30 and 40
  5. 5. Statistics

    Calculate the mean of: 22, 41, 32, 22, 41, 11, 42, 43

    Answer: 31.75

Friday 7 January 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄7 + 4⁄6

    Answer: 17⁄21
  2. 2. Algebra

    Solve: 3x + 3 = 30

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 41cm
  4. 4. Ratio

    Divide 72 in the ratio 2:1:3

    Answer: 24, 12 and 36
  5. 5. Statistics

    Find the mean of: 20, 2, 10, 12

    Answer: 11