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Cornerstone Dec 8 - 14 25 questions
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Monday 8 December 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄7 + 3⁄7

    Answer: 5⁄7
  2. 2. Algebra

    Solve: 8x - 7 = 41

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 12.73cm
  4. 4. Ratio

    Divide 108 in the ratio 2:4:3

    Answer: 24, 48 and 36
  5. 5. Statistics

    Calculate the mean of: 7, 22, 11, 30, 20, 33

    Answer: 20.5

Tuesday 9 December 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄4 + 4⁄6

    Answer: 7⁄6
  2. 2. Algebra

    Solve: 7x + 7 = 42

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 180 in the ratio 3:2:4

    Answer: 60, 40 and 80
  5. 5. Statistics

    Find the mean of: 6, 2, 10, 4, 8

    Answer: 6

Wednesday 10 December 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄7 + 1⁄6

    Answer: 19⁄42
  2. 2. Algebra

    Solve: 2x + 6 = 26

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 12.37cm
  4. 4. Ratio

    Divide 133 in the ratio 3:3:1

    Answer: 57, 57 and 19
  5. 5. Statistics

    Find the mean of: 5, 22, 5, 4

    Answer: 9

Thursday 11 December 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄11 + 3⁄11

    Answer: 9⁄11
  2. 2. Algebra

    Solve: 5x - 16 = 54

    Answer: x = 14
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 12.65cm
  4. 4. Ratio

    Divide 132 in the ratio 4:1:1

    Answer: 88, 22 and 22
  5. 5. Statistics

    Calculate the mean of: 32, 21, 23, 16, 23, 29

    Answer: 24

Friday 12 December 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 3⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 3x - 6 = 36

    Answer: x = 14
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 10.3cm
  4. 4. Ratio

    Divide 120 in the ratio 1:2:3

    Answer: 20, 40 and 60
  5. 5. Statistics

    Calculate the mean of: 16, 11, 36, 38, 24, 45. Give your answer to 2 decimal places

    Answer: 28.33