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Cornerstone Jan 31 - Feb 6 25 questions
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Monday 31 January 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 8⁄12 + 2⁄12

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 7x + 4 = 32

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 18.03cm
  4. 4. Ratio

    Divide 180 in the ratio 2:1:2

    Answer: 72, 36 and 72
  5. 5. Statistics

    Calculate the mean of: 15, 47, 36, 29, 12, 34, 26, 14. Give your answer to 2 decimal places

    Answer: 26.63

Tuesday 1 February 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: 8x - 16 = 64

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 12cm

    Answer: 15cm
  4. 4. Ratio

    Divide 210 in the ratio 4:1:2

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

    Find the mean of: 15, 15, 13, 9, 3

    Answer: 11

Wednesday 2 February 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 6⁄8

    Answer: 17⁄12
  2. 2. Algebra

    Solve: 5x - 5 = 60

    Answer: x = 13
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 8.06cm
  4. 4. Ratio

    Divide 136 in the ratio 1:1:2

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

    Find the mean of: 12, 16, 17

    Answer: 15

Thursday 3 February 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄7 + 4⁄7

    Answer: 5⁄7
  2. 2. Algebra

    Solve: 6x + 3 = 33

    Answer: x = 5
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio

    Divide 77 in the ratio 4:1:2

    Answer: 44, 11 and 22
  5. 5. Statistics

    Calculate the mean of: 30, 39, 11, 5, 28, 8, 32, 28. Give your answer to 2 decimal places

    Answer: 22.63

Friday 4 February 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄8 + 6⁄8

    Answer: 7⁄8
  2. 2. Algebra

    Solve: 2x + 6 = 16

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Share 60 in the ratio 4:1

    Answer: 48 and 12
  5. 5. Statistics

    Find the mean of: 11, 6, 7

    Answer: 8