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Cornerstone Jul 11 - 17 25 questions
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Monday 11 July 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄7 + 3⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: 6x + 5 = 53

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 11.7cm
  4. 4. Ratio

    Share 105 in the ratio 3:4

    Answer: 45 and 60
  5. 5. Statistics

    Calculate the mean of: 20, 16, 20, 43, 23, 31, 12. Give your answer to 2 decimal places

    Answer: 23.57

Tuesday 12 July 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄6 + 5⁄8

    Answer: 9⁄8
  2. 2. Algebra

    Solve: 3x + 12 = 48

    Answer: x = 12
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio

    Share 75 in the ratio 4:1

    Answer: 60 and 15
  5. 5. Statistics

    Calculate the mean of: 10, 26, 33, 15, 34, 19, 32, 47

    Answer: 27

Wednesday 13 July 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄11 + 1⁄11

    Answer: 4⁄11
  2. 2. Algebra

    Solve: 8x - 8 = 32

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 15.62cm
  4. 4. Ratio

    Share 15 in the ratio 2:1

    Answer: 10 and 5
  5. 5. Statistics

    Find the mean of: 5, 11, 2, 18

    Answer: 9

Thursday 14 July 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄10 + 2⁄10

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 4x - 14 = 10

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 9.9cm
  4. 4. Ratio

    Divide 208 in the ratio 3:1:4

    Answer: 78, 26 and 104
  5. 5. Statistics

    Calculate the mean of: 45, 27, 46, 22, 21, 24. Give your answer to 2 decimal places

    Answer: 30.83

Friday 15 July 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄8 + 1⁄3

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 5x + 8 = 68

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 128 in the ratio 3:2:3

    Answer: 48, 32 and 48
  5. 5. Statistics

    Find the mean of: 10, 11, 6

    Answer: 9