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Cornerstone Aug 29 - Sep 4 25 questions
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Monday 29 August 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄7 + 3⁄8

    Answer: 61⁄56
  2. 2. Algebra

    Solve: 2x - 6 = 14

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 10.82cm
  4. 4. Ratio

    Share 52 in the ratio 1:3

    Answer: 13 and 39
  5. 5. Statistics

    Calculate the mean of: 33, 33, 49, 13, 11, 50, 5. Give your answer to 2 decimal places

    Answer: 27.71

Tuesday 30 August 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄5 + 6⁄7

    Answer: 58⁄35
  2. 2. Algebra

    Solve: 3x - 8 = 7

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 37cm
  4. 4. Ratio

    Share 100 in the ratio 1:4

    Answer: 20 and 80
  5. 5. Statistics

    Calculate the mean of: 28, 46, 7, 18, 40, 22, 49, 34

    Answer: 30.5

Wednesday 31 August 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: 6x + 15 = 33

    Answer: x = 3
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 14.42cm
  4. 4. Ratio

    Share 60 in the ratio 2:1

    Answer: 40 and 20
  5. 5. Statistics

    Find the mean of: 11, 2, 7, 4, 16

    Answer: 8

Thursday 1 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 8⁄12 + 3⁄12

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 5x + 4 = 49

    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

    Share 80 in the ratio 1:3

    Answer: 20 and 60
  5. 5. Statistics

    Calculate the mean of: 50, 47, 28, 18, 41, 25, 39, 10

    Answer: 32.25

Friday 2 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄4 + 3⁄6

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 3x + 14 = 32

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 39cm
  4. 4. Ratio

    Share 40 in the ratio 1:3

    Answer: 10 and 30
  5. 5. Statistics

    Calculate the mean of: 22, 27, 32, 14, 9, 49, 48. Give your answer to 2 decimal places

    Answer: 28.71