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Cornerstone Jul 12 - 18 25 questions
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Monday 12 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄11 + 9⁄11

    Answer: 10⁄11
  2. 2. Algebra

    Solve: 5x + 8 = 68

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Share 39 in the ratio 1:2

    Answer: 13 and 26
  5. 5. Statistics

    Calculate the mean of: 36, 7, 8, 42, 5, 27, 10. Give your answer to 2 decimal places

    Answer: 19.29

Tuesday 13 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 6⁄8 + 3⁄5

    Answer: 27⁄20
  2. 2. Algebra

    Solve: 4x - 18 = 10

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 16.28cm
  4. 4. Ratio

    Share 45 in the ratio 3:2

    Answer: 27 and 18
  5. 5. Statistics

    Find the mean of: 11, 8, 10, 9, 17

    Answer: 11

Wednesday 14 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄6 + 4⁄7

    Answer: 59⁄42
  2. 2. Algebra

    Solve: 3x - 17 = -5

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 14.87cm
  4. 4. Ratio

    Divide 280 in the ratio 1:2:2

    Answer: 56, 112 and 112
  5. 5. Statistics

    Calculate the mean of: 6, 12, 16, 33, 24, 27, 17, 48. Give your answer to 2 decimal places

    Answer: 22.88

Thursday 15 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄8 + 1⁄8

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 2x + 3 = 13

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 171 in the ratio 1:4:4

    Answer: 19, 76 and 76
  5. 5. Statistics

    Find the mean of: 3, 3, 6, 15, 3

    Answer: 6

Friday 16 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 1⁄8

    Answer: 7⁄8
  2. 2. Algebra

    Solve: 6x + 15 = 69

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 16.28cm
  4. 4. Ratio

    Divide 65 in the ratio 1:3:1

    Answer: 13, 39 and 13
  5. 5. Statistics

    Find the mean of: 11, 10, 10, 1

    Answer: 8