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Cornerstone May 27 - Jun 2 25 questions
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Monday 27 May 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄5 + 5⁄6

    Answer: 43⁄30
  2. 2. Algebra

    Solve: 8x - 9 = 39

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 37cm
  4. 4. Ratio

    Divide 300 in the ratio 3:4:3

    Answer: 90, 120 and 90
  5. 5. Statistics

    Calculate the mean of: 48, 47, 35, 9, 48, 16, 48. Give your answer to 2 decimal places

    Answer: 35.86

Tuesday 28 May 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄5 + 2⁄4

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 4x - 11 = 21

    Answer: x = 8
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio

    Divide 243 in the ratio 1:4:4

    Answer: 27, 108 and 108
  5. 5. Statistics

    Calculate the mean of: 15, 9, 12, 38, 22, 26. Give your answer to 2 decimal places

    Answer: 20.33

Wednesday 29 May 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄9 + 3⁄9

    Answer: 8⁄9
  2. 2. Algebra

    Solve: 2x + 11 = 27

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 16.12cm
  4. 4. Ratio

    Divide 261 in the ratio 4:3:2

    Answer: 116, 87 and 58
  5. 5. Statistics

    Find the mean of: 15, 8, 7

    Answer: 10

Thursday 30 May 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄10 + 4⁄10

    Answer: 7⁄10
  2. 2. Algebra

    Solve: 7x + 8 = 85

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 88 in the ratio 3:4:1

    Answer: 33, 44 and 11
  5. 5. Statistics

    Find the mean of: 13, 10, 13

    Answer: 12

Friday 31 May 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄4 + 2⁄3

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 8x - 19 = 61

    Answer: x = 10
  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 144 in the ratio 2:1:1

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

    Calculate the mean of: 38, 33, 7, 21, 28, 5, 45. Give your answer to 2 decimal places

    Answer: 25.29