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Cornerstone Feb 6 - 12 25 questions
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Monday 6 February 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄5 + 3⁄8

    Answer: 23⁄40
  2. 2. Algebra

    Solve: 3x - 15 = 12

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 14.87cm
  4. 4. Ratio

    Divide 156 in the ratio 3:1:2

    Answer: 78, 26 and 52
  5. 5. Statistics

    Find the mean of: 11, 20, 8, 8, 13

    Answer: 12

Tuesday 7 February 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄10 + 4⁄10

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 6x + 4 = 40

    Answer: x = 6
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio

    Divide 133 in the ratio 2:1:4

    Answer: 38, 19 and 76
  5. 5. Statistics

    Calculate the mean of: 24, 48, 20, 8, 11, 14. Give your answer to 2 decimal places

    Answer: 20.83

Wednesday 8 February 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 8⁄12 + 1⁄12

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 2x + 8 = 28

    Answer: x = 10
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio

    Divide 144 in the ratio 2:1:3

    Answer: 48, 24 and 72
  5. 5. Statistics

    Calculate the mean of: 9, 24, 28, 43, 39, 31, 43

    Answer: 31

Thursday 9 February 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄6 + 2⁄3

    Answer: 1⁄1
  2. 2. Algebra

    Solve: 3x - 14 = 13

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 17.49cm
  4. 4. Ratio

    Divide 80 in the ratio 2:1:1

    Answer: 40, 20 and 20
  5. 5. Statistics

    Find the mean of: 17, 8, 2

    Answer: 9

Friday 10 February 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 2⁄3

    Answer: 17⁄12
  2. 2. Algebra

    Solve: 3x - 6 = 18

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 210 in the ratio 4:2:1

    Answer: 120, 60 and 30
  5. 5. Statistics

    Find the mean of: 10, 4, 7

    Answer: 7